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2x+1x+12=78
We simplify the equation to the form, which is simple to understand
2x+1x+12=78
We move all terms containing x to the left and all other terms to the right.
+2x+1x=+78-12
We simplify left and right side of the equation.
+3x=+66
We divide both sides of the equation by 3 to get x.
x=22
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