-5(3+4r)=85

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Solution for -5(3+4r)=85 equation: 


Simplifying
-5(3 + 4r) = 85
(3 * -5 + 4r * -5) = 85
(-15 + -20r) = 85

Solving
-15 + -20r = 85

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 + -20r = 85 + 15

Combine like terms: -15 + 15 = 0
0 + -20r = 85 + 15
-20r = 85 + 15

Combine like terms: 85 + 15 = 100
-20r = 100

Divide each side by '-20'.
r = -5

Simplifying
r = -5

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