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7*x+9/10 = (4/7)*x+144/35 // - (4/7)*x+144/35
7*x-((4/7)*x)+9/10-(144/35) = 0
7*x+(-4/7)*x+9/10-144/35 = 0
45/7*x-45/14 = 0 // + 45/14
45/7*x = 45/14 // : 45/7
x = 45/14/45/7
x = 1/2
x = 1/2
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