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7x+29+21x=3-(12+2x)
We simplify the equation to the form, which is simple to understand
7x+29+21x=3-(12+2x)
Remove unnecessary parentheses
7x+29+21x=3-12-2x
We move all terms containing x to the left and all other terms to the right.
+7x+21x+2x=+3-12-29
We simplify left and right side of the equation.
+30x=-38
We divide both sides of the equation by 30 to get x.
x=-1.26666666667
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