12r+42=

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Solution for 12r+42= equation: 


Simplifying
12r + 42 = 0

Reorder the terms:
42 + 12r = 0

Solving
42 + 12r = 0

Solving for variable 'r'.

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

Add '-42' to each side of the equation.
42 + -42 + 12r = 0 + -42

Combine like terms: 42 + -42 = 0
0 + 12r = 0 + -42
12r = 0 + -42

Combine like terms: 0 + -42 = -42
12r = -42

Divide each side by '12'.
r = -3.5

Simplifying
r = -3.5

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