-4(2r-1)-5=15

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Solution for -4(2r-1)-5=15 equation: 


Simplifying
-4(2r + -1) + -5 = 15

Reorder the terms:
-4(-1 + 2r) + -5 = 15
(-1 * -4 + 2r * -4) + -5 = 15
(4 + -8r) + -5 = 15

Reorder the terms:
4 + -5 + -8r = 15

Combine like terms: 4 + -5 = -1
-1 + -8r = 15

Solving
-1 + -8r = 15

Solving for variable 'r'.

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

Add '1' to each side of the equation.
-1 + 1 + -8r = 15 + 1

Combine like terms: -1 + 1 = 0
0 + -8r = 15 + 1
-8r = 15 + 1

Combine like terms: 15 + 1 = 16
-8r = 16

Divide each side by '-8'.
r = -2

Simplifying
r = -2

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