r-(-27)=13

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Solution for r-(-27)=13 equation: 


Simplifying
r + -1(-27) = 13

Multiply -1 * -27
r + 27 = 13

Reorder the terms:
27 + r = 13

Solving
27 + r = 13

Solving for variable 'r'.

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

Add '-27' to each side of the equation.
27 + -27 + r = 13 + -27

Combine like terms: 27 + -27 = 0
0 + r = 13 + -27
r = 13 + -27

Combine like terms: 13 + -27 = -14
r = -14

Simplifying
r = -14

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