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
8 + 10r + (8 * -4 + r * -4) = 0
8 + 10r + (-32 + -4r) = 0

Reorder the terms:
8 + -32 + 10r + -4r = 0

Combine like terms: 8 + -32 = -24
-24 + 10r + -4r = 0

Combine like terms: 10r + -4r = 6r
-24 + 6r = 0

Solving
-24 + 6r = 0

Solving for variable 'r'.

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

Add '24' to each side of the equation.
-24 + 24 + 6r = 0 + 24

Combine like terms: -24 + 24 = 0
0 + 6r = 0 + 24
6r = 0 + 24

Combine like terms: 0 + 24 = 24
6r = 24

Divide each side by '6'.
r = 4

Simplifying
r = 4

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