3x + 7 = 5x - 2
Subtract 3x from each side:
7 = 2x - 2
Add 2 to each side:
9 = 2x
Divide each side by 2:
x = 4.5
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X = 12
First, subtract 3x from each side of the equation. Then, divide each side of the equation by 7 .
5x+y=-7 3x+y=15 8=D
15x minus 8=minus 180 3x+8=24
From second equation: y = 8 + 2xSubstitute for y in first equation: 3x + 16 + 4x = 2ie 7x = -14ie x = -2 and y = 4