-4(6r+5)+4(8r+10)=

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Solution for -4(6r+5)+4(8r+10)= equation:


Simplifying
-4(6r + 5) + 4(8r + 10) = 0

Reorder the terms:
-4(5 + 6r) + 4(8r + 10) = 0
(5 * -4 + 6r * -4) + 4(8r + 10) = 0
(-20 + -24r) + 4(8r + 10) = 0

Reorder the terms:
-20 + -24r + 4(10 + 8r) = 0
-20 + -24r + (10 * 4 + 8r * 4) = 0
-20 + -24r + (40 + 32r) = 0

Reorder the terms:
-20 + 40 + -24r + 32r = 0

Combine like terms: -20 + 40 = 20
20 + -24r + 32r = 0

Combine like terms: -24r + 32r = 8r
20 + 8r = 0

Solving
20 + 8r = 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 + 8r = 0 + -20

Combine like terms: 20 + -20 = 0
0 + 8r = 0 + -20
8r = 0 + -20

Combine like terms: 0 + -20 = -20
8r = -20

Divide each side by '8'.
r = -2.5

Simplifying
r = -2.5

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