r-(-18)=-10

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Solution for r-(-18)=-10 equation: 


Simplifying
r + -1(-18) = -10

Multiply -1 * -18
r + 18 = -10

Reorder the terms:
18 + r = -10

Solving
18 + r = -10

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 = -10 + -18

Combine like terms: 18 + -18 = 0
0 + r = -10 + -18
r = -10 + -18

Combine like terms: -10 + -18 = -28
r = -28

Simplifying
r = -28

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