Sunday

December 28, 2014

December 28, 2014

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

3x-4y=-5

x=y+2

HELP Me.!

- math -
**Christiaan**, Monday, February 25, 2008 at 9:46pmThis 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

**Answer this Question**

**Related Questions**

math - solve each system of equations by substitution. y=3x-9 please help ...

Substitution Method-Plz help - Use the Substitution method to solve the system ...

Calculus 2 - Evalute the integral of x/(x^2+4)dx using u-substitution and then ...

Help please math - Solve using substitution. y = x – 2 x + y = 10 7x + 2y = - 8 ...

algebra - i need help with these problems (either a solution or how to plug them...

Math - how do you solve this system? I'm using substitution.. y=3x+4 y=-x^2 ...

Math help - Solve using substitution 3x - 9y = 3 6x - 3y = -24 Solve using ...

Math - Solve using substitution 3x - 9y = 3 6x - 3y = -24 Solve using ...

math/ elimination& substitution - how do i solve this? using elimination or ...

Math - I still don't know how to directly solve this problem. Can someone guide ...