8r-7=18

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Solution for 8r-7=18 equation: 


Simplifying
8r + -7 = 18

Reorder the terms:
-7 + 8r = 18

Solving
-7 + 8r = 18

Solving for variable 'r'.

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

Add '7' to each side of the equation.
-7 + 7 + 8r = 18 + 7

Combine like terms: -7 + 7 = 0
0 + 8r = 18 + 7
8r = 18 + 7

Combine like terms: 18 + 7 = 25
8r = 25

Divide each side by '8'.
r = 3.125

Simplifying
r = 3.125

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