7r-12=8

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Solution for 7r-12=8 equation: 


Simplifying
7r + -12 = 8

Reorder the terms:
-12 + 7r = 8

Solving
-12 + 7r = 8

Solving for variable 'r'.

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

Add '12' to each side of the equation.
-12 + 12 + 7r = 8 + 12

Combine like terms: -12 + 12 = 0
0 + 7r = 8 + 12
7r = 8 + 12

Combine like terms: 8 + 12 = 20
7r = 20

Divide each side by '7'.
r = 2.857142857

Simplifying
r = 2.857142857

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