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(4/5)*x+2 = -3/4 // + -3/4
(4/5)*x-(-3/4)+2 = 0
(4/5)*x+3/4+2 = 0
4/5*x+11/4 = 0 // - 11/4
4/5*x = -11/4 // : 4/5
x = -11/4/4/5
x = -55/16
x = -55/16
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