!set titb=Ejemplo
!set keyw=
!set datm=20030325
!set prev=
!set next=
!set upbl=propadd
!set dat1=19000101
!set dat2=24000101


!if $wims_read_parm!=$empty
 !goto $wims_read_parm
!endif
!exit

:content
<div class="exemple">
!set tmp0=!randint 2, 9

!set m_a=$[rint($(tmp0))]

<p>

!set tmp0=!randint 2, 9

!set m_b=$[rint($(tmp0))]


!set tmp0=!randitem +,-

!set m_signe1=$(tmp0) 


!set tmp0=!randitem +,-

!set m_signe2=$(tmp0) 


!set m_s=$[rint($m_signe1 1*$m_a+($m_signe2 1)*$m_b)]

<p>
<center>  

!insmath \matrix{         (\signe1 \a)+(\signe2 \b) & = & \s  \\         (\signe2 \b)+(\signe1 \a) & = & \s }  

</center>
</div>

