4(3r-1)=20

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Solution for 4(3r-1)=20 equation: 


Simplifying
4(3r + -1) = 20

Reorder the terms:
4(-1 + 3r) = 20
(-1 * 4 + 3r * 4) = 20
(-4 + 12r) = 20

Solving
-4 + 12r = 20

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 = 20 + 4

Combine like terms: -4 + 4 = 0
0 + 12r = 20 + 4
12r = 20 + 4

Combine like terms: 20 + 4 = 24
12r = 24

Divide each side by '12'.
r = 2

Simplifying
r = 2

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