9(5-4r)=

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Solution for 9(5-4r)= equation: 


Simplifying
9(5 + -4r) = 0
(5 * 9 + -4r * 9) = 0
(45 + -36r) = 0

Solving
45 + -36r = 0

Solving for variable 'r'.

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

Add '-45' to each side of the equation.
45 + -45 + -36r = 0 + -45

Combine like terms: 45 + -45 = 0
0 + -36r = 0 + -45
-36r = 0 + -45

Combine like terms: 0 + -45 = -45
-36r = -45

Divide each side by '-36'.
r = 1.25

Simplifying
r = 1.25

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