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4+2x+3x=39
We simplify the equation to the form, which is simple to understand
4+2x+3x=39
We move all terms containing x to the left and all other terms to the right.
+2x+3x=+39-4
We simplify left and right side of the equation.
+5x=+35
We divide both sides of the equation by 5 to get x.
x=7
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