4(5-r)=

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Solution for 4(5-r)= equation:


Simplifying
4(5 + -1r) = 0
(5 * 4 + -1r * 4) = 0
(20 + -4r) = 0

Solving
20 + -4r = 0

Solving for variable 'r'.

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

Add '-20' to each side of the equation.
20 + -20 + -4r = 0 + -20

Combine like terms: 20 + -20 = 0
0 + -4r = 0 + -20
-4r = 0 + -20

Combine like terms: 0 + -20 = -20
-4r = -20

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

Simplifying
r = 5

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