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6x+2x+7=31
We simplify the equation to the form, which is simple to understand
6x+2x+7=31
We move all terms containing x to the left and all other terms to the right.
+6x+2x=+31-7
We simplify left and right side of the equation.
+8x=+24
We divide both sides of the equation by 8 to get x.
x=3
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