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(9*x)/3+(36*x)/6-(45/9) = -126/9 // + -126/9
(9*x)/3+(36*x)/6-(45/9)-(-126/9) = 0
(9*x)/3+(36*x)/6-5+14 = 0
9*x+9 = 0 // - 9
9*x = -9 // : 9
x = -9/9
x = -1
x = -1
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