10x+21+x^2=21+10x+x^2

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Solution for 10x+21+x^2=21+10x+x^2 equation: 


Simplifying
10x + 21 + x2 = 21 + 10x + x2

Reorder the terms:
21 + 10x + x2 = 21 + 10x + x2

Add '-21' to each side of the equation.
21 + 10x + -21 + x2 = 21 + 10x + -21 + x2

Reorder the terms:
21 + -21 + 10x + x2 = 21 + 10x + -21 + x2

Combine like terms: 21 + -21 = 0
0 + 10x + x2 = 21 + 10x + -21 + x2
10x + x2 = 21 + 10x + -21 + x2

Reorder the terms:
10x + x2 = 21 + -21 + 10x + x2

Combine like terms: 21 + -21 = 0
10x + x2 = 0 + 10x + x2
10x + x2 = 10x + x2

Add '-10x' to each side of the equation.
10x + -10x + x2 = 10x + -10x + x2

Combine like terms: 10x + -10x = 0
0 + x2 = 10x + -10x + x2
x2 = 10x + -10x + x2

Combine like terms: 10x + -10x = 0
x2 = 0 + x2
x2 = x2

Add '-1x2' to each side of the equation.
x2 + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
0 = x2 + -1x2

Combine like terms: x2 + -1x2 = 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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