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5x = - 25
x = -5
b. 6x + 15 - 7x = 16
6x - 7x = 1
-x = 1
x = -1
8x-3x=-20-5
5x=-25
x=
x=-5
b. 3(2x+5)-7x=16
6x+15-7x=16
6x-7x=16-15
-x=1
x=-1