3r-9=-102

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Solution for 3r-9=-102 equation: 


Simplifying
3r + -9 = -102

Reorder the terms:
-9 + 3r = -102

Solving
-9 + 3r = -102

Solving for variable 'r'.

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

Add '9' to each side of the equation.
-9 + 9 + 3r = -102 + 9

Combine like terms: -9 + 9 = 0
0 + 3r = -102 + 9
3r = -102 + 9

Combine like terms: -102 + 9 = -93
3r = -93

Divide each side by '3'.
r = -31

Simplifying
r = -31

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