8-p=9-(-12)-3p

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Solution for 8-p=9-(-12)-3p equation:


Simplifying
8 + -1p = 9 + -1(-12) + -3p

Multiply -1 * -12
8 + -1p = 9 + 12 + -3p

Combine like terms: 9 + 12 = 21
8 + -1p = 21 + -3p

Solving
8 + -1p = 21 + -3p

Solving for variable 'p'.

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

Add '3p' to each side of the equation.
8 + -1p + 3p = 21 + -3p + 3p

Combine like terms: -1p + 3p = 2p
8 + 2p = 21 + -3p + 3p

Combine like terms: -3p + 3p = 0
8 + 2p = 21 + 0
8 + 2p = 21

Add '-8' to each side of the equation.
8 + -8 + 2p = 21 + -8

Combine like terms: 8 + -8 = 0
0 + 2p = 21 + -8
2p = 21 + -8

Combine like terms: 21 + -8 = 13
2p = 13

Divide each side by '2'.
p = 6.5

Simplifying
p = 6.5

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