R-(-13)=40

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Solution for R-(-13)=40 equation: 


Simplifying
R + -1(-13) = 40

Multiply -1 * -13
R + 13 = 40

Reorder the terms:
13 + R = 40

Solving
13 + R = 40

Solving for variable 'R'.

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

Add '-13' to each side of the equation.
13 + -13 + R = 40 + -13

Combine like terms: 13 + -13 = 0
0 + R = 40 + -13
R = 40 + -13

Combine like terms: 40 + -13 = 27
R = 27

Simplifying
R = 27

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