r-(7)=-13

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Solution for r-(7)=-13 equation: 


Simplifying
r + -1(7) = -13

Multiply -1 * 7
r + -7 = -13

Reorder the terms:
-7 + r = -13

Solving
-7 + r = -13

Solving for variable 'r'.

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

Add '7' to each side of the equation.
-7 + 7 + r = -13 + 7

Combine like terms: -7 + 7 = 0
0 + r = -13 + 7
r = -13 + 7

Combine like terms: -13 + 7 = -6
r = -6

Simplifying
r = -6

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