-p-12=4p+21

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


Simplifying
-1p + -12 = 4p + 21

Reorder the terms:
-12 + -1p = 4p + 21

Reorder the terms:
-12 + -1p = 21 + 4p

Solving
-12 + -1p = 21 + 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.
-12 + -1p + -4p = 21 + 4p + -4p

Combine like terms: -1p + -4p = -5p
-12 + -5p = 21 + 4p + -4p

Combine like terms: 4p + -4p = 0
-12 + -5p = 21 + 0
-12 + -5p = 21

Add '12' to each side of the equation.
-12 + 12 + -5p = 21 + 12

Combine like terms: -12 + 12 = 0
0 + -5p = 21 + 12
-5p = 21 + 12

Combine like terms: 21 + 12 = 33
-5p = 33

Divide each side by '-5'.
p = -6.6

Simplifying
p = -6.6

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