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5*x = (5-(7*(5-(8*x))))/8 // - (5-(7*(5-(8*x))))/8
5*x-((5-(7*(5-(8*x))))/8) = 0
5*x-((5-7*(5-8*x))/8) = 0
(-1*(5-7*(5-8*x)))/8+5*x = 0
(-1*(5-7*(5-8*x)))/8+(5*8*x)/8 = 0
5*8*x-1*(5-7*(5-8*x)) = 0
30-16*x = 0
(30-16*x)/8 = 0
(30-16*x)/8 = 0 // * 8
30-16*x = 0
30-16*x = 0 // - 30
-16*x = -30 // : -16
x = -30/(-16)
x = 15/8
x = 15/8
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