21=2p+6p-3

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Solution for 21=2p+6p-3 equation:


Simplifying
21 = 2p + 6p + -3

Reorder the terms:
21 = -3 + 2p + 6p

Combine like terms: 2p + 6p = 8p
21 = -3 + 8p

Solving
21 = -3 + 8p

Solving for variable 'p'.

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

Add '-8p' to each side of the equation.
21 + -8p = -3 + 8p + -8p

Combine like terms: 8p + -8p = 0
21 + -8p = -3 + 0
21 + -8p = -3

Add '-21' to each side of the equation.
21 + -21 + -8p = -3 + -21

Combine like terms: 21 + -21 = 0
0 + -8p = -3 + -21
-8p = -3 + -21

Combine like terms: -3 + -21 = -24
-8p = -24

Divide each side by '-8'.
p = 3

Simplifying
p = 3

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