-5(-2-4r)+8=30+8r

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Solution for -5(-2-4r)+8=30+8r equation:


Simplifying
-5(-2 + -4r) + 8 = 30 + 8r
(-2 * -5 + -4r * -5) + 8 = 30 + 8r
(10 + 20r) + 8 = 30 + 8r

Reorder the terms:
10 + 8 + 20r = 30 + 8r

Combine like terms: 10 + 8 = 18
18 + 20r = 30 + 8r

Solving
18 + 20r = 30 + 8r

Solving for variable 'r'.

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

Add '-8r' to each side of the equation.
18 + 20r + -8r = 30 + 8r + -8r

Combine like terms: 20r + -8r = 12r
18 + 12r = 30 + 8r + -8r

Combine like terms: 8r + -8r = 0
18 + 12r = 30 + 0
18 + 12r = 30

Add '-18' to each side of the equation.
18 + -18 + 12r = 30 + -18

Combine like terms: 18 + -18 = 0
0 + 12r = 30 + -18
12r = 30 + -18

Combine like terms: 30 + -18 = 12
12r = 12

Divide each side by '12'.
r = 1

Simplifying
r = 1

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