Posted by **Laura** on Thursday, March 7, 2013 at 3:36pm.

solve the system by substitution..

-3x-5y=-17

4x=y-8

- Fundamentals of math -
**Dr. Jane**, Thursday, March 7, 2013 at 3:38pm
-3x - 5y = -17

4x+8 = y I solve this for y

Now rewrite the first equation and put in 4x + 8 for y.

-3x -5(4x+8) = -17

solve for x. Be sure to multiply both 4x and 8 by negative 5.

Once you have x, you can find y in the original equation.

Also, always check your x and y in both equations to be sure you have not made a mistake.

- Fundamentals of math -
**Laura**, Thursday, March 7, 2013 at 3:47pm
Thank you so much

- Fundamentals of math -
**Dr. Jane**, Thursday, March 7, 2013 at 3:48pm
You are welcome

## Answer this Question

## Related Questions

- algebra - i need help with these problems (either a solution or how to plug them...
- Math Homework - Hello! I need help with these math questions, thanks! :) 1.) ...
- 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 ...
- Algebra - I have a few questions I need help with! 1. Solve the system by ...
- Algebra help! - 1.) Solve the system by triangularizing the augmented matrix and...
- Algebra help needed please!! - I have a few questions I need help with! 1. Solve...
- math - Solve this system 10x+2y=7,y=-5x+3 by addition or substitution. If a ...
- algebra 2 - Nonlinear systems Solve the system by elimination. y=x^2+2 -4x-y=10 ...
- algebra 2 - Nonlinear homework... Solve the system by elimination. 1)y=x^2+2 -4x...

More Related Questions