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Math 8th grade need help equation in picture

Math 8th grade need help equation in picture-example-1

2 Answers

7 votes

Answer:

(-3,-4)

Explanation:

x+y=-7

3x+2y=-17

x=-y-7

substitute

3(-y-7)+2y=-17

-3y-21+2y=-17

-y=4

y=-4

x=-3

Proof:

x+y=-7

(-3)+(-4)=-7 true

3x+2y=-17

3(-3)+2(-4)=-17

-9-8=-17 true

User Arthur Khazbulatov
by
3.5k points
14 votes
Answer: (-3,-4)

Hope this helped!
User BajajG
by
4.3k points