0.25(4+20r)-8=-5

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Solution for 0.25(4+20r)-8=-5 equation: 


Simplifying
0.25(4 + 20r) + -8 = -5
(4 * 0.25 + 20r * 0.25) + -8 = -5
(1 + 5r) + -8 = -5

Reorder the terms:
1 + -8 + 5r = -5

Combine like terms: 1 + -8 = -7
-7 + 5r = -5

Solving
-7 + 5r = -5

Solving for variable 'r'.

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

Add '7' to each side of the equation.
-7 + 7 + 5r = -5 + 7

Combine like terms: -7 + 7 = 0
0 + 5r = -5 + 7
5r = -5 + 7

Combine like terms: -5 + 7 = 2
5r = 2

Divide each side by '5'.
r = 0.4

Simplifying
r = 0.4

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