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# Algebra 2 Home work help!!?

Please show me how you got the answer:

Solve each system by substitution:

29. -x - 4y = 3

x + 5y = 5

30. 8x + 7y = 9

y = -1

Thank you!

### 2 Answers

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- Anonymous9 years agoFavorite Answer
-x-4y=3

x+5y=5....subtract 5y

x=5-5y.....plug this into one of the originals

-(5-5y)-4y=3...distribute the -1

-5+5y-4y=3...add 5 to both sides

5y-4y=8...combine like terms

y=8....plug this in for y

-x-4(8)=3

-x-32=3

-x=35

x=-35

(-35,8)

do same for number 30

- Anonymous9 years ago
-5+5y-4y=3

y=8 so

x+40=5

x=-35

8x-7=9

8x=16

x=2 y=-1

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