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-213+x=60-12x
We simplify the equation to the form, which is simple to understand
-213+x=60-12x
We move all terms containing x to the left and all other terms to the right.
+1x+12x=+60+213
We simplify left and right side of the equation.
+13x=+273
We divide both sides of the equation by 13 to get x.
x=21
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