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(4*x)/9 = -7/5 // + -7/5
(4*x)/9-(-7/5) = 0
(4*x)/9+7/5 = 0
4/9*x+7/5 = 0 // - 7/5
4/9*x = -7/5 // : 4/9
x = -7/5/4/9
x = -63/20
x = -63/20
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