r+34=21

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Solution for r+34=21 equation:


Simplifying
r + 34 = 21

Reorder the terms:
34 + r = 21

Solving
34 + r = 21

Solving for variable 'r'.

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

Add '-34' to each side of the equation.
34 + -34 + r = 21 + -34

Combine like terms: 34 + -34 = 0
0 + r = 21 + -34
r = 21 + -34

Combine like terms: 21 + -34 = -13
r = -13

Simplifying
r = -13

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