42-20=2p

Solution for 42-20=2p equation:

Simplifying
42 + -20 = 2p

Combine like terms: 42 + -20 = 22
22 = 2p

Solving
22 = 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.
22 + -2p = 2p + -2p

Combine like terms: 2p + -2p = 0
22 + -2p = 0

Add '-22' to each side of the equation.
22 + -22 + -2p = 0 + -22

Combine like terms: 22 + -22 = 0
0 + -2p = 0 + -22
-2p = 0 + -22

Combine like terms: 0 + -22 = -22
-2p = -22

Divide each side by '-2'.
p = 11

Simplifying
p = 11