r-(-9)=-19

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Solution for r-(-9)=-19 equation: 


Simplifying
r + -1(-9) = -19

Multiply -1 * -9
r + 9 = -19

Reorder the terms:
9 + r = -19

Solving
9 + r = -19

Solving for variable 'r'.

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

Add '-9' to each side of the equation.
9 + -9 + r = -19 + -9

Combine like terms: 9 + -9 = 0
0 + r = -19 + -9
r = -19 + -9

Combine like terms: -19 + -9 = -28
r = -28

Simplifying
r = -28

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