12=-30r

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Solution for 12=-30r equation:


Simplifying
12 = -30r

Solving
12 = -30r

Solving for variable 'r'.

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

Add '30r' to each side of the equation.
12 + 30r = -30r + 30r

Combine like terms: -30r + 30r = 0
12 + 30r = 0

Add '-12' to each side of the equation.
12 + -12 + 30r = 0 + -12

Combine like terms: 12 + -12 = 0
0 + 30r = 0 + -12
30r = 0 + -12

Combine like terms: 0 + -12 = -12
30r = -12

Divide each side by '30'.
r = -0.4

Simplifying
r = -0.4

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