r-(-40)=-68

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Solution for r-(-40)=-68 equation: 


Simplifying
r + -1(-40) = -68

Multiply -1 * -40
r + 40 = -68

Reorder the terms:
40 + r = -68

Solving
40 + r = -68

Solving for variable 'r'.

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

Add '-40' to each side of the equation.
40 + -40 + r = -68 + -40

Combine like terms: 40 + -40 = 0
0 + r = -68 + -40
r = -68 + -40

Combine like terms: -68 + -40 = -108
r = -108

Simplifying
r = -108

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