3r+7=-20

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Solution for 3r+7=-20 equation: 


Simplifying
3r + 7 = -20

Reorder the terms:
7 + 3r = -20

Solving
7 + 3r = -20

Solving for variable 'r'.

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

Add '-7' to each side of the equation.
7 + -7 + 3r = -20 + -7

Combine like terms: 7 + -7 = 0
0 + 3r = -20 + -7
3r = -20 + -7

Combine like terms: -20 + -7 = -27
3r = -27

Divide each side by '3'.
r = -9

Simplifying
r = -9

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