-21=-4p-12

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Solution for -21=-4p-12 equation:


Simplifying
-21 = -4p + -12

Reorder the terms:
-21 = -12 + -4p

Solving
-21 = -12 + -4p

Solving for variable 'p'.

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

Add '4p' to each side of the equation.
-21 + 4p = -12 + -4p + 4p

Combine like terms: -4p + 4p = 0
-21 + 4p = -12 + 0
-21 + 4p = -12

Add '21' to each side of the equation.
-21 + 21 + 4p = -12 + 21

Combine like terms: -21 + 21 = 0
0 + 4p = -12 + 21
4p = -12 + 21

Combine like terms: -12 + 21 = 9
4p = 9

Divide each side by '4'.
p = 2.25

Simplifying
p = 2.25

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