Posted by **juan** on Monday, February 25, 2008 at 9:24pm.

solve using substitution

3x-4y=-5

x=y+2

HELP Me.!

- math -
**Christiaan**, Monday, February 25, 2008 at 9:46pm
This one is easy. x is already expressed in terms of y in the second equation. You only have to replace the x in the forst equation with the expression from the second equation. You get that:

3*(y+2)-4y=-5

=>3y+6-4y=-5

=>6-y=-5

=>y=11

When we place this value for y in the second equation, we find that

x=11+2=13

So, y=11 and x=13

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