r+7=8r

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Solution for r+7=8r equation:


Simplifying
r + 7 = 8r

Reorder the terms:
7 + r = 8r

Solving
7 + r = 8r

Solving for variable 'r'.

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

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

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

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

Add '-7' to each side of the equation.
7 + -7 + -7r = 0 + -7

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

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

Divide each side by '-7'.
r = 1

Simplifying
r = 1

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