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7 - 5x= 35 - x
-5x + x= 35 - 7
-4x= 28
x= 28/-4
x= -7
B)
5x + 4= 3(x - 2)
5x + 4= 3x - 6
5x - 3x= -6 - 4
2x= -10
x= -10/2
x= -5
C)
(x - 8) + 4= 3(2x + 7) -9
x - 8 + 4= 6x + 21 - 9
x - 4= 6x + 12
x - 6x= 12 + 4
-5x= 16
x= 16/-5
x= -16/5
x= -3 1/5