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x+6/7 = 48/7-7*x // - 48/7-7*x
x-(-7*x)+6/7-(48/7) = 0
x+7*x+6/7-48/7 = 0
8*x-6 = 0 // + 6
8*x = 6 // : 8
x = 6/8
x = 3/4
x = 3/4
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