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9-2(-8+4)=17
We simplify the equation to the form, which is simple to understand
9-2(-8+4)=17
Simplifying terms in parentheses
9-2*(-4)=17
Reorder the terms in parentheses
9+(+8)=17
Remove unnecessary parentheses
+9+8=+17
We move all terms containing to the left and all other terms to the right.
0=+17-9-8
We simplify left and right side of the equation.
0=0
0=0
This equation is an identity, so all real numbers are solutions.
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