r-(-11)=87

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Solution for r-(-11)=87 equation: 


Simplifying
r + -1(-11) = 87

Multiply -1 * -11
r + 11 = 87

Reorder the terms:
11 + r = 87

Solving
11 + r = 87

Solving for variable 'r'.

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

Add '-11' to each side of the equation.
11 + -11 + r = 87 + -11

Combine like terms: 11 + -11 = 0
0 + r = 87 + -11
r = 87 + -11

Combine like terms: 87 + -11 = 76
r = 76

Simplifying
r = 76

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