2r+20=-40

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Solution for 2r+20=-40 equation: 


Simplifying
2r + 20 = -40

Reorder the terms:
20 + 2r = -40

Solving
20 + 2r = -40

Solving for variable 'r'.

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

Add '-20' to each side of the equation.
20 + -20 + 2r = -40 + -20

Combine like terms: 20 + -20 = 0
0 + 2r = -40 + -20
2r = -40 + -20

Combine like terms: -40 + -20 = -60
2r = -60

Divide each side by '2'.
r = -30

Simplifying
r = -30

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