1-p-2=-9

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Solution for 1-p-2=-9 equation: 


Simplifying
1 + -1p + -2 = -9

Reorder the terms:
1 + -2 + -1p = -9

Combine like terms: 1 + -2 = -1
-1 + -1p = -9

Solving
-1 + -1p = -9

Solving for variable 'p'.

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

Add '1' to each side of the equation.
-1 + 1 + -1p = -9 + 1

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

Combine like terms: -9 + 1 = -8
-1p = -8

Divide each side by '-1'.
p = 8

Simplifying
p = 8

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