-4(1+5r)+9=

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Solution for -4(1+5r)+9= equation:


Simplifying
-4(1 + 5r) + 9 = 0
(1 * -4 + 5r * -4) + 9 = 0
(-4 + -20r) + 9 = 0

Reorder the terms:
-4 + 9 + -20r = 0

Combine like terms: -4 + 9 = 5
5 + -20r = 0

Solving
5 + -20r = 0

Solving for variable 'r'.

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

Add '-5' to each side of the equation.
5 + -5 + -20r = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -20r = 0 + -5
-20r = 0 + -5

Combine like terms: 0 + -5 = -5
-20r = -5

Divide each side by '-20'.
r = 0.25

Simplifying
r = 0.25

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