-4(r+9)=-55

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Solution for -4(r+9)=-55 equation: 


Simplifying
-4(r + 9) = -55

Reorder the terms:
-4(9 + r) = -55
(9 * -4 + r * -4) = -55
(-36 + -4r) = -55

Solving
-36 + -4r = -55

Solving for variable 'r'.

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

Add '36' to each side of the equation.
-36 + 36 + -4r = -55 + 36

Combine like terms: -36 + 36 = 0
0 + -4r = -55 + 36
-4r = -55 + 36

Combine like terms: -55 + 36 = -19
-4r = -19

Divide each side by '-4'.
r = 4.75

Simplifying
r = 4.75

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