12+9z+2z-11=12z+11-z-10

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Solution for 12+9z+2z-11=12z+11-z-10 equation: 


Simplifying
12 + 9z + 2z + -11 = 12z + 11 + -1z + -10

Reorder the terms:
12 + -11 + 9z + 2z = 12z + 11 + -1z + -10

Combine like terms: 12 + -11 = 1
1 + 9z + 2z = 12z + 11 + -1z + -10

Combine like terms: 9z + 2z = 11z
1 + 11z = 12z + 11 + -1z + -10

Reorder the terms:
1 + 11z = 11 + -10 + 12z + -1z

Combine like terms: 11 + -10 = 1
1 + 11z = 1 + 12z + -1z

Combine like terms: 12z + -1z = 11z
1 + 11z = 1 + 11z

Add '-1' to each side of the equation.
1 + -1 + 11z = 1 + -1 + 11z

Combine like terms: 1 + -1 = 0
0 + 11z = 1 + -1 + 11z
11z = 1 + -1 + 11z

Combine like terms: 1 + -1 = 0
11z = 0 + 11z
11z = 11z

Add '-11z' to each side of the equation.
11z + -11z = 11z + -11z

Combine like terms: 11z + -11z = 0
0 = 11z + -11z

Combine like terms: 11z + -11z = 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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