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(9*x)/16 = 80/8-(3/8) // - 80/8-(3/8)
(9*x)/16-(80/8)+3/8 = 0
(9*x)/16+3/8-10 = 0
9/16*x-77/8 = 0 // + 77/8
9/16*x = 77/8 // : 9/16
x = 77/8/9/16
x = 154/9
x = 154/9
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