2+[12+r]=[2+12]+r

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Solution for 2+[12+r]=[2+12]+r equation: 


Simplifying
2 + [12 + r] = [2 + 12] + r

Remove brackets around [12 + r]
2 + 12 + r = [2 + 12] + r

Combine like terms: 2 + 12 = 14
14 + r = [2 + 12] + r

Combine like terms: 2 + 12 = 14
14 + r = [14] + r
14 + r = 14 + r

Add '-14' to each side of the equation.
14 + -14 + r = 14 + -14 + r

Combine like terms: 14 + -14 = 0
0 + r = 14 + -14 + r
r = 14 + -14 + r

Combine like terms: 14 + -14 = 0
r = 0 + r
r = r

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

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

Combine like terms: r + -1r = 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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