10x+9=30+10x-21

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Solution for 10x+9=30+10x-21 equation: 


Simplifying
10x + 9 = 30 + 10x + -21

Reorder the terms:
9 + 10x = 30 + 10x + -21

Reorder the terms:
9 + 10x = 30 + -21 + 10x

Combine like terms: 30 + -21 = 9
9 + 10x = 9 + 10x

Add '-9' to each side of the equation.
9 + -9 + 10x = 9 + -9 + 10x

Combine like terms: 9 + -9 = 0
0 + 10x = 9 + -9 + 10x
10x = 9 + -9 + 10x

Combine like terms: 9 + -9 = 0
10x = 0 + 10x
10x = 10x

Add '-10x' to each side of the equation.
10x + -10x = 10x + -10x

Combine like terms: 10x + -10x = 0
0 = 10x + -10x

Combine like terms: 10x + -10x = 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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