8(2r+1)=4(7r+7)

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Solution for 8(2r+1)=4(7r+7) equation:


Simplifying
8(2r + 1) = 4(7r + 7)

Reorder the terms:
8(1 + 2r) = 4(7r + 7)
(1 * 8 + 2r * 8) = 4(7r + 7)
(8 + 16r) = 4(7r + 7)

Reorder the terms:
8 + 16r = 4(7 + 7r)
8 + 16r = (7 * 4 + 7r * 4)
8 + 16r = (28 + 28r)

Solving
8 + 16r = 28 + 28r

Solving for variable 'r'.

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

Add '-28r' to each side of the equation.
8 + 16r + -28r = 28 + 28r + -28r

Combine like terms: 16r + -28r = -12r
8 + -12r = 28 + 28r + -28r

Combine like terms: 28r + -28r = 0
8 + -12r = 28 + 0
8 + -12r = 28

Add '-8' to each side of the equation.
8 + -8 + -12r = 28 + -8

Combine like terms: 8 + -8 = 0
0 + -12r = 28 + -8
-12r = 28 + -8

Combine like terms: 28 + -8 = 20
-12r = 20

Divide each side by '-12'.
r = -1.666666667

Simplifying
r = -1.666666667

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