8(1+2r)=-5r-13

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Solution for 8(1+2r)=-5r-13 equation:


Simplifying
8(1 + 2r) = -5r + -13
(1 * 8 + 2r * 8) = -5r + -13
(8 + 16r) = -5r + -13

Reorder the terms:
8 + 16r = -13 + -5r

Solving
8 + 16r = -13 + -5r

Solving for variable 'r'.

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

Add '5r' to each side of the equation.
8 + 16r + 5r = -13 + -5r + 5r

Combine like terms: 16r + 5r = 21r
8 + 21r = -13 + -5r + 5r

Combine like terms: -5r + 5r = 0
8 + 21r = -13 + 0
8 + 21r = -13

Add '-8' to each side of the equation.
8 + -8 + 21r = -13 + -8

Combine like terms: 8 + -8 = 0
0 + 21r = -13 + -8
21r = -13 + -8

Combine like terms: -13 + -8 = -21
21r = -21

Divide each side by '21'.
r = -1

Simplifying
r = -1

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