4(1-3r)=28

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Solution for 4(1-3r)=28 equation: 


Simplifying
4(1 + -3r) = 28
(1 * 4 + -3r * 4) = 28
(4 + -12r) = 28

Solving
4 + -12r = 28

Solving for variable 'r'.

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

Add '-4' to each side of the equation.
4 + -4 + -12r = 28 + -4

Combine like terms: 4 + -4 = 0
0 + -12r = 28 + -4
-12r = 28 + -4

Combine like terms: 28 + -4 = 24
-12r = 24

Divide each side by '-12'.
r = -2

Simplifying
r = -2

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