4(1-5r)=25

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Solution for 4(1-5r)=25 equation: 


Simplifying
4(1 + -5r) = 25
(1 * 4 + -5r * 4) = 25
(4 + -20r) = 25

Solving
4 + -20r = 25

Solving for variable 'r'.

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

Add '-4' to each side of the equation.
4 + -4 + -20r = 25 + -4

Combine like terms: 4 + -4 = 0
0 + -20r = 25 + -4
-20r = 25 + -4

Combine like terms: 25 + -4 = 21
-20r = 21

Divide each side by '-20'.
r = -1.05

Simplifying
r = -1.05

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