R=$graad
!if $negatief=0
    !if $taal=nl
	nivo_title=Rekenregels over delen en optellen of aftrekken<br>alleen met positieve getallen
	hint=Zie de Help-pagina.
    !else
	nivo_title=Priority rules on Calculating: division,addition and subtraction<br>only with positive numbers
	hint=Look into the help-pages.
    !endif    
    !for n=1 to $aantal_sommen
	!if $graad=0
	    R=$n
	!endif    
	aa=!randitem 2,3,4
	b=!randitem 1,2,3,4,5
	c=!randitem 6,7,8,9,10
	d=!randitem 2,3,4,5,6,7
	a=$[$b*$c + $aa]
	pm=!randitem +,-
        !if $R=1
	    somtekst$n=$a - $c \div $aa \,\,\,=\,\,\,    	
	    SOM=$a - $c/$aa
	    extra$n=$a - \frac{$c}{$aa} \,\,\,=\,\,\,     	
	!endif
	!if $R=2
	    somtekst$n=\left( $a - $b \right) \div $c \,\,\,=\,\,\,	
	    SOM= ($a - $b)/$c 	
	    extra$n= \frac{$a - $b}{$c} = \frac{$[$a-$b]}{$c} \,\,\,=\,\,\,
	!endif
	!if $R=3 
	    somtekst$n=$a \div \left( $c - $b \right) \,\,\,=\,\,\,
	    SOM= $a/( $c - $b)
	    extra$n=\frac{$a}{\left( $c - $b \right)}=\frac{$a}{$[$c-$b]} \,\,\,=\,\,\, 
	!endif
	!if $R=4 
	    somtekst$n=$a $pm $c \div $b + $d \,\,\,=\,\,\,		
	    SOM= $a $pm $c/$b + $d
	    extra$n= $a $pm \frac{$c}{$b} + $d \,\,\,=\,\,\,  		
	!endif
	!if $R=5
	    somtekst$n=\left( $a + $d - $b \right) \div $c \,\,\,=\,\,\,		
	    SOM= ($a + $d - $b)/$c
	    extra$n=\frac{$a + $d - $b}{$c} = \frac{$[$a+$d-$b]}{$c} \,\,\,=\,\,\, 		
	!endif
	!if $R=6
	    somtekst$n=\left( $a + $d \right) \div $c - $b \,\,\,=\,\,\,		
	    SOM= ($a + $d )/$c - $b
	    extra$n= \frac{\left( $a + $b \right)}{$c} - $b  \,\,\,=\,\,\, 		
	!endif
	!if $n>6
	    somtekst$n=\left( $a + $d \right) \div \left( $c - $b \right) \,\,\,=\,\,\,		
	    SOM= ($a + $d )/($c - $b)
	    extra$n=\frac{ $a + $d }{ $c - $b } = \frac{$[$a + $d]}{$[$c - $b]} \,=\,\,\, 		
	!endif
	TOTAAL=!append line $SOM to $TOTAAL
    !next n
!endif

!if $negatief=1  
    !if $taal=nl
	nivo_title=Rekenregels over delen en optellen of aftrekken<br>Nu ook met negatieve getallen
	hint=Zie de Help-pagina.
    !else
	nivo_title=Priority rules on Calculating: division,addition and subtraction<br>also with negative numbers
	hint=Look into the help-pages.
    !endif    
    !for n=1 to $aantal_sommen 
	!if $graad=0
	    R=$n
	!endif    
	pm=!randitem -,+ 
	mp=!randitem -,+
	a=!randitem 1,2,3,4,5,6,7,8,9,10,-1,-2,-3,-4,-5,-6,-7,-8,-9,-10
	b=!randitem 1,2,3,4,5
	c=!randitem 6,7,8,9,10
	d=$[2*$a]
        !if $R=1
	    somtekst$n=$a $pm $b \div $c \,\,\,=\,\,\,    	
	    SOM= $a $pm $b/$c
	    extra$n=$a $pm \frac{$b}{$c} \,\,\,=\,\,\,     	
	!endif
	!if $R=2
	    somtekst$n=\left( $a $pm $b \right) \div $c \,\,\,=\,\,\,	
	    SOM= ($a $pm $b)/$c
	    extra$n=\frac{$a $pm $b}{$c}=\frac{$[$a $pm $b]}{$c} \,=\,\,\, 	
	!endif
	!if $R=3 
	    somtekst$n=$a \div ( $b $pm $c) \,\,\,=\,\,\,
	    SOM= $a/( $b $pm $c)
	    extra$n=\frac{$a}{$b $pm $c}=\frac{$a}{$[$b $pm $c]} \,=\,\,\, 
	!endif
	!if $R=4 
	    somtekst$n=$a $pm $d $mp $b \div $c \,\,\,=\,\,\,		
	    SOM= $a $pm $d $mp $b/$c 	
	    extra$n= $[$a $pm $d] $mp \frac{$b}{$c} \,\,\,=\,\,\,	
	!endif
	!if $R=5
	    somtekst$n=\left( $a $pm $d $mp $b \right) \div $c \,\,\,=\,\,\,		
	    SOM= ($a $pm $d $mp $b)/$c 
	    extra$n=\frac{\left($a $pm $d $mp $b \right)}{$c} = \frac{$[$a $pm $d $mp $b]}{$c} \,=\,\,\,
	    		
	!endif
	!if $R=6
	    somtekst$n=\left( $a $pm $d \right) \div $b $mp $c \,\,\,=\,\,\,		
	    SOM= ($a $pm $d )/$b $mp $c
	    extra$n=\frac{$a $pm $d}{$b} $mp $c =\frac{$[$a $pm $d]}{$b} $mp $c \,\,\,=\,\,\, 		
	!endif
	!if $R>6
	    somtekst$n=\left( $a $pm $d \right) \div \left( $b $mp $c \right) \,\,\,=\,\,\,		
	    SOM= ($a $pm $d )/($b $mp $c)
	    extra$n=\frac{$a $pm $d}{$b $mp $c}=\frac{$[$a $pm $d]}{$[$b $mp $c]} \,\,=\,\,\,  		
	!endif
	TOTAAL=!append line $SOM to $TOTAAL
    !next n
!endif    

GOED=!exec pari $TOTAAL
!for n=1 to $aantal_sommen
    GOED$n=!line $n of $GOED   
!next
