2r+5=-21

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Solution for 2r+5=-21 equation: 


Simplifying
2r + 5 = -21

Reorder the terms:
5 + 2r = -21

Solving
5 + 2r = -21

Solving for variable 'r'.

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

Add '-5' to each side of the equation.
5 + -5 + 2r = -21 + -5

Combine like terms: 5 + -5 = 0
0 + 2r = -21 + -5
2r = -21 + -5

Combine like terms: -21 + -5 = -26
2r = -26

Divide each side by '2'.
r = -13

Simplifying
r = -13

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