-3p+9+4p=12

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Solution for -3p+9+4p=12 equation: 


Simplifying
-3p + 9 + 4p = 12

Reorder the terms:
9 + -3p + 4p = 12

Combine like terms: -3p + 4p = 1p
9 + 1p = 12

Solving
9 + 1p = 12

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 + 1p = 12 + -9

Combine like terms: 9 + -9 = 0
0 + 1p = 12 + -9
1p = 12 + -9

Combine like terms: 12 + -9 = 3
1p = 3

Divide each side by '1'.
p = 3

Simplifying
p = 3

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