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-3x - 5x = 3 - 5
-8x = -2
x = 2/8
= 1/4
b) -x +7 = 7x - 1
-x -7x = -1 -7
-8x = -8
x = 1
c) -3x - 1 > 2x + 4
-3x - 2x > 4 + 1
-5x > 5
x < -1
d) 2x + 2 > x + 1
2x - x > 1 -2
x > -1