(-15)-3r=

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Solution for (-15)-3r= equation: 


Simplifying
(-15) + -3r = 0
-15 + -3r = 0

Solving
-15 + -3r = 0

Solving for variable 'r'.

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

Add '15' to each side of the equation.
-15 + 15 + -3r = 0 + 15

Combine like terms: -15 + 15 = 0
0 + -3r = 0 + 15
-3r = 0 + 15

Combine like terms: 0 + 15 = 15
-3r = 15

Divide each side by '-3'.
r = -5

Simplifying
r = -5

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