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15x+4-7x=2(4x+2)
We simplify the equation to the form, which is simple to understand
15x+4-7x=2(4x+2)
Reorder the terms in parentheses
15x+4-7x=+(+8x+4)
Remove unnecessary parentheses
+15x+4-7x=+8x+4
We move all terms containing x to the left and all other terms to the right.
+15x-7x-8x=+4-4
We simplify left and right side of the equation.
0x=0
0=0
This equation is an identity, so all real numbers are solutions.
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