2(r+7)+4r=8

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Solution for 2(r+7)+4r=8 equation:


Simplifying
2(r + 7) + 4r = 8

Reorder the terms:
2(7 + r) + 4r = 8
(7 * 2 + r * 2) + 4r = 8
(14 + 2r) + 4r = 8

Combine like terms: 2r + 4r = 6r
14 + 6r = 8

Solving
14 + 6r = 8

Solving for variable 'r'.

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

Add '-14' to each side of the equation.
14 + -14 + 6r = 8 + -14

Combine like terms: 14 + -14 = 0
0 + 6r = 8 + -14
6r = 8 + -14

Combine like terms: 8 + -14 = -6
6r = -6

Divide each side by '6'.
r = -1

Simplifying
r = -1

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