3(1-2r)=15-2r

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Solution for 3(1-2r)=15-2r equation:


Simplifying
3(1 + -2r) = 15 + -2r
(1 * 3 + -2r * 3) = 15 + -2r
(3 + -6r) = 15 + -2r

Solving
3 + -6r = 15 + -2r

Solving for variable 'r'.

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

Add '2r' to each side of the equation.
3 + -6r + 2r = 15 + -2r + 2r

Combine like terms: -6r + 2r = -4r
3 + -4r = 15 + -2r + 2r

Combine like terms: -2r + 2r = 0
3 + -4r = 15 + 0
3 + -4r = 15

Add '-3' to each side of the equation.
3 + -3 + -4r = 15 + -3

Combine like terms: 3 + -3 = 0
0 + -4r = 15 + -3
-4r = 15 + -3

Combine like terms: 15 + -3 = 12
-4r = 12

Divide each side by '-4'.
r = -3

Simplifying
r = -3

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