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(3*x)/5+1/7 = (-2*x)/5-(1/9) // - (-2*x)/5-(1/9)
(3*x)/5-((-2*x)/5)+1/7+1/9 = 0
(3*x)/5+(2/5)*x+1/7+1/9 = 0
x+16/63 = 0 // - 16/63
x = -16/63
x = -16/63
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