-4r-7=15

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Solution for -4r-7=15 equation: 


Simplifying
-4r + -7 = 15

Reorder the terms:
-7 + -4r = 15

Solving
-7 + -4r = 15

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 + -4r = 15 + 7

Combine like terms: -7 + 7 = 0
0 + -4r = 15 + 7
-4r = 15 + 7

Combine like terms: 15 + 7 = 22
-4r = 22

Divide each side by '-4'.
r = -5.5

Simplifying
r = -5.5

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