5-r=15

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Solution for 5-r=15 equation: 


Simplifying
5 + -1r = 15

Solving
5 + -1r = 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 + -1r = 15 + -5

Combine like terms: 5 + -5 = 0
0 + -1r = 15 + -5
-1r = 15 + -5

Combine like terms: 15 + -5 = 10
-1r = 10

Divide each side by '-1'.
r = -10

Simplifying
r = -10

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