21+7r+7r-15=16r+16-2r-10

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Solution for 21+7r+7r-15=16r+16-2r-10 equation:


Simplifying
21 + 7r + 7r + -15 = 16r + 16 + -2r + -10

Reorder the terms:
21 + -15 + 7r + 7r = 16r + 16 + -2r + -10

Combine like terms: 21 + -15 = 6
6 + 7r + 7r = 16r + 16 + -2r + -10

Combine like terms: 7r + 7r = 14r
6 + 14r = 16r + 16 + -2r + -10

Reorder the terms:
6 + 14r = 16 + -10 + 16r + -2r

Combine like terms: 16 + -10 = 6
6 + 14r = 6 + 16r + -2r

Combine like terms: 16r + -2r = 14r
6 + 14r = 6 + 14r

Add '-6' to each side of the equation.
6 + -6 + 14r = 6 + -6 + 14r

Combine like terms: 6 + -6 = 0
0 + 14r = 6 + -6 + 14r
14r = 6 + -6 + 14r

Combine like terms: 6 + -6 = 0
14r = 0 + 14r
14r = 14r

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

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

Combine like terms: 14r + -14r = 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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