4p-9=-2+21

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Solution for 4p-9=-2+21 equation: 


Simplifying
4p + -9 = -2 + 21

Reorder the terms:
-9 + 4p = -2 + 21

Combine like terms: -2 + 21 = 19
-9 + 4p = 19

Solving
-9 + 4p = 19

Solving for variable 'p'.

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

Add '9' to each side of the equation.
-9 + 9 + 4p = 19 + 9

Combine like terms: -9 + 9 = 0
0 + 4p = 19 + 9
4p = 19 + 9

Combine like terms: 19 + 9 = 28
4p = 28

Divide each side by '4'.
p = 7

Simplifying
p = 7

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