9-4(2p-1)=81

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Solution for 9-4(2p-1)=81 equation: 


Simplifying
9 + -4(2p + -1) = 81

Reorder the terms:
9 + -4(-1 + 2p) = 81
9 + (-1 * -4 + 2p * -4) = 81
9 + (4 + -8p) = 81

Combine like terms: 9 + 4 = 13
13 + -8p = 81

Solving
13 + -8p = 81

Solving for variable 'p'.

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

Add '-13' to each side of the equation.
13 + -13 + -8p = 81 + -13

Combine like terms: 13 + -13 = 0
0 + -8p = 81 + -13
-8p = 81 + -13

Combine like terms: 81 + -13 = 68
-8p = 68

Divide each side by '-8'.
p = -8.5

Simplifying
p = -8.5

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