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40-((3*x)/5) = 6*x+7/8 // - 6*x+7/8
40-((3*x)/5)-(6*x)-(7/8) = 0
(-3/5)*x-6*x-7/8+40 = 0
313/8-33/5*x = 0 // - 313/8
-33/5*x = -313/8 // : -33/5
x = -313/8/(-33/5)
x = 1565/264
x = 1565/264
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