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-56x-4
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7 - 8x = 17 7 - 8x - 7 = 17 - 7 -8x = 10 -8x/-8 = 10/-8 x = -10/8 = - 5/4
-8x <= -56 so x => 7
7-8x = 21 -8x = 21-7 -8x = 14 x = -1.75
28=8x+12-7 28=8x+5 23=8x x=23/8
It is 7+8x simplified