180-(10+70)-(60+20)=20

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Solution for 180-(10+70)-(60+20)=20 equation:


180-(10+70)-(60+20)=20

We simplify the equation to the form, which is simple to understand 
180-(10+70)-(60+20)=20

Simplifying terms in parentheses
180-(+80)-(60+20)=20

Simplifying terms in parentheses
180-(+80)-(+80)=20

Remove unnecessary parentheses
180-80-(+80)=20

Remove unnecessary parentheses
180-80-80=20

We move all terms containing  to the left and all other terms to the right. 
0=+20-180+80+80

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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