-15=1-2r-6r

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Solution for -15=1-2r-6r equation:


Simplifying
-15 = 1 + -2r + -6r

Combine like terms: -2r + -6r = -8r
-15 = 1 + -8r

Solving
-15 = 1 + -8r

Solving for variable 'r'.

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

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

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

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

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

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

Divide each side by '8'.
r = 2

Simplifying
r = 2

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