5p-9=-2p+21

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Solution for 5p-9=-2p+21 equation:


Simplifying
5p + -9 = -2p + 21

Reorder the terms:
-9 + 5p = -2p + 21

Reorder the terms:
-9 + 5p = 21 + -2p

Solving
-9 + 5p = 21 + -2p

Solving for variable 'p'.

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

Add '2p' to each side of the equation.
-9 + 5p + 2p = 21 + -2p + 2p

Combine like terms: 5p + 2p = 7p
-9 + 7p = 21 + -2p + 2p

Combine like terms: -2p + 2p = 0
-9 + 7p = 21 + 0
-9 + 7p = 21

Add '9' to each side of the equation.
-9 + 9 + 7p = 21 + 9

Combine like terms: -9 + 9 = 0
0 + 7p = 21 + 9
7p = 21 + 9

Combine like terms: 21 + 9 = 30
7p = 30

Divide each side by '7'.
p = 4.285714286

Simplifying
p = 4.285714286

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