-4(4r+5)=

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


Simplifying
-4(4r + 5) = 0

Reorder the terms:
-4(5 + 4r) = 0
(5 * -4 + 4r * -4) = 0
(-20 + -16r) = 0

Solving
-20 + -16r = 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 + -16r = 0 + 20

Combine like terms: -20 + 20 = 0
0 + -16r = 0 + 20
-16r = 0 + 20

Combine like terms: 0 + 20 = 20
-16r = 20

Divide each side by '-16'.
r = -1.25

Simplifying
r = -1.25

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