here... if you still dont know the sign here it is Ax+By=C
first step:
write the equation...
ex. [b]5x[/b]-4y= 4
second step:
transpose [b]5x[/b] to the other side, it will become...
-4y= [b]-5x[/b]+4
as you can see the positive sign becomes negative....when you transpose a number, you have to change its sign...
third step:
divide it by [b]-4y[/b]
[b]-4y/-4[/b] = [b]-5x/-4 + 4/-4 [/b]
when dividing like sign the answer is positive and when unlike sign negative...
then...the answer is:
[b]5x/4 -1[/b]
[b]hope this will help... goodluck sis...!!![/b]
Last edited by pauline416 (2008-08-05 08:25:17)