8 - 17x = 25
-17x = 25 - 8
-17x = 17
x = 17 : (-17)
x = -1
5 - x = 20 + 2x
-x - 2x = 20 - 5
-3x = 15
x = 15 : (-3)
x= -5
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8 - 17x = 25
-17x = 25 - 8
-17x = 17
x = 17 : (-17)
x = -1
5 - x = 20 + 2x
-x - 2x = 20 - 5
-3x = 15
x = 15 : (-3)
x= -5