r-5=-15

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Solution for r-5=-15 equation: 


Simplifying
r + -5 = -15

Reorder the terms:
-5 + r = -15

Solving
-5 + r = -15

Solving for variable 'r'.

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

Add '5' to each side of the equation.
-5 + 5 + r = -15 + 5

Combine like terms: -5 + 5 = 0
0 + r = -15 + 5
r = -15 + 5

Combine like terms: -15 + 5 = -10
r = -10

Simplifying
r = -10

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