3(2p-1)=21

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Solution for 3(2p-1)=21 equation: 


Simplifying
3(2p + -1) = 21

Reorder the terms:
3(-1 + 2p) = 21
(-1 * 3 + 2p * 3) = 21
(-3 + 6p) = 21

Solving
-3 + 6p = 21

Solving for variable 'p'.

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

Add '3' to each side of the equation.
-3 + 3 + 6p = 21 + 3

Combine like terms: -3 + 3 = 0
0 + 6p = 21 + 3
6p = 21 + 3

Combine like terms: 21 + 3 = 24
6p = 24

Divide each side by '6'.
p = 4

Simplifying
p = 4

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