r-1=11+7r

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Solution for r-1=11+7r equation:


Simplifying
r + -1 = 11 + 7r

Reorder the terms:
-1 + r = 11 + 7r

Solving
-1 + r = 11 + 7r

Solving for variable 'r'.

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

Add '-7r' to each side of the equation.
-1 + r + -7r = 11 + 7r + -7r

Combine like terms: r + -7r = -6r
-1 + -6r = 11 + 7r + -7r

Combine like terms: 7r + -7r = 0
-1 + -6r = 11 + 0
-1 + -6r = 11

Add '1' to each side of the equation.
-1 + 1 + -6r = 11 + 1

Combine like terms: -1 + 1 = 0
0 + -6r = 11 + 1
-6r = 11 + 1

Combine like terms: 11 + 1 = 12
-6r = 12

Divide each side by '-6'.
r = -2

Simplifying
r = -2

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