R-(-18)=13

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Solution for R-(-18)=13 equation: 


Simplifying
R + -1(-18) = 13

Multiply -1 * -18
R + 18 = 13

Reorder the terms:
18 + R = 13

Solving
18 + R = 13

Solving for variable 'R'.

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

Add '-18' to each side of the equation.
18 + -18 + R = 13 + -18

Combine like terms: 18 + -18 = 0
0 + R = 13 + -18
R = 13 + -18

Combine like terms: 13 + -18 = -5
R = -5

Simplifying
R = -5

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