-20x+10y+20x+(-10y)=20-20

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Solution for -20x+10y+20x+(-10y)=20-20 equation: 


Simplifying
-20x + 10y + 20x + (-10y) = 20 + -20

Reorder the terms:
-20x + 20x + 10y + (-10y) = 20 + -20

Combine like terms: -20x + 20x = 0
0 + 10y + (-10y) = 20 + -20
10y + (-10y) = 20 + -20

Combine like terms: 10y + (-10y) = 0
0 = 20 + -20

Combine like terms: 20 + -20 = 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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