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(2/7)*x-(7/10) = -47/10 // + -47/10
(2/7)*x-(7/10)-(-47/10) = 0
(2/7)*x-7/10+47/10 = 0
2/7*x+4 = 0 // - 4
2/7*x = -4 // : 2/7
x = -4/2/7
x = -14
x = -14
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