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

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