180-70+20=130

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Solution for 180-70+20=130 equation: 


Simplifying
180 + -70 + 20 = 130

Combine like terms: 180 + -70 = 110
110 + 20 = 130

Combine like terms: 110 + 20 = 130
130 = 130

Add '-130' to each side of the equation.
130 + -130 = 130 + -130

Combine like terms: 130 + -130 = 0
0 = 130 + -130

Combine like terms: 130 + -130 = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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