8(r+1)=-4r+5(r-4)

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Solution for 8(r+1)=-4r+5(r-4) equation:


Simplifying
8(r + 1) = -4r + 5(r + -4)

Reorder the terms:
8(1 + r) = -4r + 5(r + -4)
(1 * 8 + r * 8) = -4r + 5(r + -4)
(8 + 8r) = -4r + 5(r + -4)

Reorder the terms:
8 + 8r = -4r + 5(-4 + r)
8 + 8r = -4r + (-4 * 5 + r * 5)
8 + 8r = -4r + (-20 + 5r)

Reorder the terms:
8 + 8r = -20 + -4r + 5r

Combine like terms: -4r + 5r = 1r
8 + 8r = -20 + 1r

Solving
8 + 8r = -20 + 1r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
8 + 8r + -1r = -20 + 1r + -1r

Combine like terms: 8r + -1r = 7r
8 + 7r = -20 + 1r + -1r

Combine like terms: 1r + -1r = 0
8 + 7r = -20 + 0
8 + 7r = -20

Add '-8' to each side of the equation.
8 + -8 + 7r = -20 + -8

Combine like terms: 8 + -8 = 0
0 + 7r = -20 + -8
7r = -20 + -8

Combine like terms: -20 + -8 = -28
7r = -28

Divide each side by '7'.
r = -4

Simplifying
r = -4

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