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17+2(4)=21+2(4)
We simplify the equation to the form, which is simple to understand
17+2(4)=21+2(4)
Reorder the terms in parentheses
17+(+8)=21+2*(4)
Remove unnecessary parentheses
+17+8=+21+2+*(+4+)
Reorder the terms in parentheses
17+8=21+(+8)
Remove unnecessary parentheses
+17+8=+21+8
We move all terms containing to the left and all other terms to the right.
0=+21+8-17-8
We simplify left and right side of the equation.
0=+4
0=4
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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