-2(1-r)=38+7r

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Solution for -2(1-r)=38+7r equation:


Simplifying
-2(1 + -1r) = 38 + 7r
(1 * -2 + -1r * -2) = 38 + 7r
(-2 + 2r) = 38 + 7r

Solving
-2 + 2r = 38 + 7r

Solving for variable 'r'.

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

Add '-7r' to each side of the equation.
-2 + 2r + -7r = 38 + 7r + -7r

Combine like terms: 2r + -7r = -5r
-2 + -5r = 38 + 7r + -7r

Combine like terms: 7r + -7r = 0
-2 + -5r = 38 + 0
-2 + -5r = 38

Add '2' to each side of the equation.
-2 + 2 + -5r = 38 + 2

Combine like terms: -2 + 2 = 0
0 + -5r = 38 + 2
-5r = 38 + 2

Combine like terms: 38 + 2 = 40
-5r = 40

Divide each side by '-5'.
r = -8

Simplifying
r = -8

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