2(4r+5)-12=

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Solution for 2(4r+5)-12= equation:


Simplifying
2(4r + 5) + -12 = 0

Reorder the terms:
2(5 + 4r) + -12 = 0
(5 * 2 + 4r * 2) + -12 = 0
(10 + 8r) + -12 = 0

Reorder the terms:
10 + -12 + 8r = 0

Combine like terms: 10 + -12 = -2
-2 + 8r = 0

Solving
-2 + 8r = 0

Solving for variable 'r'.

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

Add '2' to each side of the equation.
-2 + 2 + 8r = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 8r = 0 + 2
8r = 0 + 2

Combine like terms: 0 + 2 = 2
8r = 2

Divide each side by '8'.
r = 0.25

Simplifying
r = 0.25

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