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

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


Simplifying
2(5r + 4) + -4 + (r + 8) = 0

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

Reorder the terms:
8 + 10r + -4 + (8 + r) = 0

Remove parenthesis around (8 + r)
8 + 10r + -4 + 8 + r = 0

Reorder the terms:
8 + -4 + 8 + 10r + r = 0

Combine like terms: 8 + -4 = 4
4 + 8 + 10r + r = 0

Combine like terms: 4 + 8 = 12
12 + 10r + r = 0

Combine like terms: 10r + r = 11r
12 + 11r = 0

Solving
12 + 11r = 0

Solving for variable 'r'.

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

Add '-12' to each side of the equation.
12 + -12 + 11r = 0 + -12

Combine like terms: 12 + -12 = 0
0 + 11r = 0 + -12
11r = 0 + -12

Combine like terms: 0 + -12 = -12
11r = -12

Divide each side by '11'.
r = -1.090909091

Simplifying
r = -1.090909091

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