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10x-31+9x-13=127
We simplify the equation to the form, which is simple to understand
10x-31+9x-13=127
We move all terms containing x to the left and all other terms to the right.
+10x+9x=+127+31+13
We simplify left and right side of the equation.
+19x=+171
We divide both sides of the equation by 19 to get x.
x=9
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