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Use substitution to it 7) 4x – 2y=-22 -x+y=3​
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1 vote
Use substitution to it
7) 4x – 2y=-22
-x+y=3​

User Ungeheuer
by
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1 Answer

3 votes
Rearrange -x+y = 3 to y = x+3
Then substitute into the first equation.
4x - 2(x+3)= -22
4x - 2x - 6 = -22
2x -6 = -22
2x = -16
x = -8
Then I put this into y = x+3
y = -8 + 3
y = -5
User Josir
by
4.6k points
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