30=2(30)-30

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Solution for 30=2(30)-30 equation:


30=2(30)-30

We simplify the equation to the form, which is simple to understand 
30=2(30)-30

Reorder the terms in parentheses
30=+(+60)-30

Remove unnecessary parentheses
+30=+60-30

We move all terms containing  to the left and all other terms to the right. 
0=+60-30-30

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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