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2-((1/7)*x) = -8 // + 8
2-((1/7)*x)+8 = 0
(-1/7)*x+2+8 = 0
10-1/7*x = 0 // - 10
-1/7*x = -10 // : -1/7
x = -10/(-1/7)
x = 70
x = 70
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