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7*x+3/4 = -197/36 // + -197/36
7*x+3/4-(-197/36) = 0
7*x+3/4+197/36 = 0
7*x+56/9 = 0 // - 56/9
7*x = -56/9 // : 7
x = -56/9/7
x = -8/9
x = -8/9
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