8r-5+7=12

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Solution for 8r-5+7=12 equation:


Simplifying
8r + -5 + 7 = 12

Reorder the terms:
-5 + 7 + 8r = 12

Combine like terms: -5 + 7 = 2
2 + 8r = 12

Solving
2 + 8r = 12

Solving for variable 'r'.

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

Add '-2' to each side of the equation.
2 + -2 + 8r = 12 + -2

Combine like terms: 2 + -2 = 0
0 + 8r = 12 + -2
8r = 12 + -2

Combine like terms: 12 + -2 = 10
8r = 10

Divide each side by '8'.
r = 1.25

Simplifying
r = 1.25

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