8r-7=70+r

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Solution for 8r-7=70+r equation:


Simplifying
8r + -7 = 70 + r

Reorder the terms:
-7 + 8r = 70 + r

Solving
-7 + 8r = 70 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
-7 + 8r + -1r = 70 + r + -1r

Combine like terms: 8r + -1r = 7r
-7 + 7r = 70 + r + -1r

Combine like terms: r + -1r = 0
-7 + 7r = 70 + 0
-7 + 7r = 70

Add '7' to each side of the equation.
-7 + 7 + 7r = 70 + 7

Combine like terms: -7 + 7 = 0
0 + 7r = 70 + 7
7r = 70 + 7

Combine like terms: 70 + 7 = 77
7r = 77

Divide each side by '7'.
r = 11

Simplifying
r = 11

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