-6(1-2r)=42

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Solution for -6(1-2r)=42 equation: 


Simplifying
-6(1 + -2r) = 42
(1 * -6 + -2r * -6) = 42
(-6 + 12r) = 42

Solving
-6 + 12r = 42

Solving for variable 'r'.

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

Add '6' to each side of the equation.
-6 + 6 + 12r = 42 + 6

Combine like terms: -6 + 6 = 0
0 + 12r = 42 + 6
12r = 42 + 6

Combine like terms: 42 + 6 = 48
12r = 48

Divide each side by '12'.
r = 4

Simplifying
r = 4

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