r+77=99

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Solution for r+77=99 equation: 


Simplifying
r + 77 = 99

Reorder the terms:
77 + r = 99

Solving
77 + r = 99

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '-77' to each side of the equation.
77 + -77 + r = 99 + -77

Combine like terms: 77 + -77 = 0
0 + r = 99 + -77
r = 99 + -77

Combine like terms: 99 + -77 = 22
r = 22

Simplifying
r = 22

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