20=18-2p

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Solution for 20=18-2p equation:


Simplifying
20 = 18 + -2p

Solving
20 = 18 + -2p

Solving for variable 'p'.

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

Add '2p' to each side of the equation.
20 + 2p = 18 + -2p + 2p

Combine like terms: -2p + 2p = 0
20 + 2p = 18 + 0
20 + 2p = 18

Add '-20' to each side of the equation.
20 + -20 + 2p = 18 + -20

Combine like terms: 20 + -20 = 0
0 + 2p = 18 + -20
2p = 18 + -20

Combine like terms: 18 + -20 = -2
2p = -2

Divide each side by '2'.
p = -1

Simplifying
p = -1

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