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7x+15+2x=4(x+2)+5x
We simplify the equation to the form, which is simple to understand
7x+15+2x=4(x+2)+5x
Reorder the terms in parentheses
7x+15+2x=+(+4x+8)+5x
Remove unnecessary parentheses
+7x+15+2x=+4x+8+5x
We move all terms containing x to the left and all other terms to the right.
+7x+2x-4x-5x=+8-15
We simplify left and right side of the equation.
0x=-7
0=-7
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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