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3x+4+2x-9=7x-13
We simplify the equation to the form, which is simple to understand
3x+4+2x-9=7x-13
We move all terms containing x to the left and all other terms to the right.
+3x+2x-7x=-13-4+9
We simplify left and right side of the equation.
-2x=-8
We divide both sides of the equation by -2 to get x.
x=4
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