r+11=2r-7

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Solution for r+11=2r-7 equation:


Simplifying
r + 11 = 2r + -7

Reorder the terms:
11 + r = 2r + -7

Reorder the terms:
11 + r = -7 + 2r

Solving
11 + r = -7 + 2r

Solving for variable 'r'.

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

Add '-2r' to each side of the equation.
11 + r + -2r = -7 + 2r + -2r

Combine like terms: r + -2r = -1r
11 + -1r = -7 + 2r + -2r

Combine like terms: 2r + -2r = 0
11 + -1r = -7 + 0
11 + -1r = -7

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

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

Combine like terms: -7 + -11 = -18
-1r = -18

Divide each side by '-1'.
r = 18

Simplifying
r = 18

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