-3r-7=-22

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Solution for -3r-7=-22 equation: 


Simplifying
-3r + -7 = -22

Reorder the terms:
-7 + -3r = -22

Solving
-7 + -3r = -22

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 = -22 + 7

Combine like terms: -7 + 7 = 0
0 + -3r = -22 + 7
-3r = -22 + 7

Combine like terms: -22 + 7 = -15
-3r = -15

Divide each side by '-3'.
r = 5

Simplifying
r = 5

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