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(-4/7)*x-(8/9) = 5*x-463/126 // - 5*x-463/126
(-4/7)*x-(5*x)-(8/9)-(-463/126) = 0
(-4/7)*x-5*x-8/9+463/126 = 0
39/14-39/7*x = 0 // - 39/14
-39/7*x = -39/14 // : -39/7
x = -39/14/(-39/7)
x = 1/2
x = 1/2
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