y=7+x
=x=7-x
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Add 4x - 2 to each side: 5x = 5 x = 1
2x + 7 = 1 Therefore, 2x = -6 x = -6/2 x = -3
3
(x + 7)2 = 5 x + 7 = ±√5 x + 7 - 7 = -7 ± √5 x = -7 ± √5
6x-7=8x+9 bring the x over -7=2x+9 take the 9 over -16=2x divide both sides by 2 x=-8