-4r-5=15

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Solution for -4r-5=15 equation: 


Simplifying
-4r + -5 = 15

Reorder the terms:
-5 + -4r = 15

Solving
-5 + -4r = 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 + -4r = 15 + 5

Combine like terms: -5 + 5 = 0
0 + -4r = 15 + 5
-4r = 15 + 5

Combine like terms: 15 + 5 = 20
-4r = 20

Divide each side by '-4'.
r = -5

Simplifying
r = -5

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