!if $taal=nl
    nivo_title=Los de volgende vergelijking op <br>(Bereken dus de waarde van de letter)
!else
    nivo_title=Solve the equation
!endif
!if $BEREKENINGEN=1
    bewerking=bewerking4.proc
!else
    bewerking=bewerking1.proc
!endif

n=$teller
max_aantal=6
min_aantal=1
keuze=!randitem 1,2

!if $graad = 0
    R=$teller
!else
    R=$graad
!endif    

!if $variabelen=1
    X$n=!randitem a,b,c,d,f,x,y,z,p,g,k,t,r,n,m
!else
    X$n=x
!endif

!if $breuken=0
    !if $R=1 
        a=!randint 10,100
        !if $keuze=1		
	    som$n=$a + $(X$n) \,\,\,=\,\,\,0 
    	    G$n=$[-1*$a]
    	    extra$n=$(X$n) \,\,=\,\, 0 - $a \Longrightarrow      $(X$n) \,\,=\,\, $(G$n) 
	!else
	    a=$[-1*$a]
	    som$n=$a - $(X$n) \,\,\,=\,\,\,0 
	    G$n=$a
	    extra$n= - $(X$n) \,\,=\,\, - $a \Longrightarrow   $(X$n) \,\,=\,\, $a 	    
	!endif
     !exit
    !endif

    !if $R=2 
	a=!randint 10,100
	b=!randitem 2,3,4,5,6,7,8,9	
	!if $keuze=1
	    som$n=$a + $(X$n)  - $b\,\,\,=\,\,\,0 
	    G$n=$[-1*($a - $b)]
	    extra$n=$(X$n) \,\,=\,\, 0 - $[$a - $b] \Longrightarrow      $(X$n) \,\,=\,\, $(G$n)
	!else
    	    som$n=$a - $(X$n) - $b \,\,\,=\,\,\,0 
	    G$n=$[$a - $b]
	    extra$n= - $(X$n) \,\,=\,\, - $[$a - $b] \Longrightarrow      $(X$n) \,\,=\,\, $(G$n)	    
	!endif
     !exit
    !endif
	
    !if $R>2
	a=!randitem 2,3,4,5,6,7,8,9,10
	!if $R>3 
	    a=$[-1*$a]
	!endif	
	G$n=!randitem 2,3,4,5,6,7,8,9
	b=$[$a*$(G$n)]
	som$n=$a \cdot $(X$n) - $b \,\,\,=\,\,\,0 
	extra$n=$a\cdot $(X$n) \,\,\,= $b \Longrightarrow   $(X$n) \,\,\,=\,\,\, $(G$n)
     !exit
    !endif
!else
    !if $R=1 
	# a + x = 0 => x=-a
        Te=!randint 1,30
	No=!randint 20,50
	pm=!randitem -1,1
	aa=!exec pari A=-1*($pm*($Te/$No))\
	printtex(A)\
	printtex($pm*($Te/$No))
	
	G$n=!line 1 of $aa
	GG=!line 2 of $aa
	a=!line 3 of $aa
	som$n=$a + $(X$n) \,\,\,=\,\,\,0 
    	extra$n=$(X$n) \,\,=\,\, 0 - $a \Longrightarrow  $(X$n) \,\,=\,\, $GG 
     !exit
    !endif

    !if $R=2 
	# a - x - b =0 => x=a-b
        Te=!randint 1,30
	No=!randint 20,50
	b=!randitem 2,3,4,5,6,7,8,9	
	aa=!exec pari A=($Te/$No) - $b\
	printtex(A)\
	printtex($Te/$No)
	
	G$n=!line 1 of $aa
	GG=!line 2 of $aa
	a=!line 3 of $aa	
    	som$n=$a - $(X$n) - $b \,\,\,=\,\,\,0 
	extra$n= $a - $b = $(X$n) \Longrightarrow   $(X$n) \,\,=\,\, $GG	    
     !exit
    !endif
	
    !if $R=3
	# ax-b=0 => x=b/a
	a=!randitem 2,3,4,5,6,7,8,9,10
	b=!randitem 1/2,2/3,3/4,4/5,5/6,6/7,1/4,1/3,1/5,2/5,3/5,4/5,5/6
	aa=!exec pari A=($b)/$a\
	printtex(A)\
	printtex($b)
	
	G$n=!line 1 of $aa
	GG=!line 2 of $aa
	b=!line 3 of $aa
	som$n=$a \cdot $(X$n) - $b \,\,\,=\,\,\,0 
	extra$n=$a\cdot $(X$n) \,\,\,= $b \Longrightarrow   $(X$n) \,\,\,=\,\,\, $GG
     !exit
    !endif

    !if $R>3 
	a=!randitem 2,3,4,5,6,7,8,9,10
	G$n=!randitem 2,3,4,5,6,7,8,9
	b=$[$a*$(G$n)]
	d=!randitem 2,3,4,5,6,7,8,9,10,11,12,13,14,15,16
	som$n=\frac{$a \cdot $(X$n)}{$d} - \frac{$b}{$d} \,\,\,=\,\,\, 0
	extra$n=$a\cdot $(X$n) \,\,\,= $b \Longrightarrow   $(X$n) \,\,\,=\,\,\, $(G$n)
     !exit
    !endif

!endif

