-(1-7r)=-15+5r

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Solution for -(1-7r)=-15+5r equation:


Simplifying
-1(1 + -7r) = -15 + 5r
(1 * -1 + -7r * -1) = -15 + 5r
(-1 + 7r) = -15 + 5r

Solving
-1 + 7r = -15 + 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.
-1 + 7r + -5r = -15 + 5r + -5r

Combine like terms: 7r + -5r = 2r
-1 + 2r = -15 + 5r + -5r

Combine like terms: 5r + -5r = 0
-1 + 2r = -15 + 0
-1 + 2r = -15

Add '1' to each side of the equation.
-1 + 1 + 2r = -15 + 1

Combine like terms: -1 + 1 = 0
0 + 2r = -15 + 1
2r = -15 + 1

Combine like terms: -15 + 1 = -14
2r = -14

Divide each side by '2'.
r = -7

Simplifying
r = -7

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