90-P=2P

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Solution for 90-P=2P equation:


Simplifying
90 + -1P = 2P

Solving
90 + -1P = 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.
90 + -1P + -2P = 2P + -2P

Combine like terms: -1P + -2P = -3P
90 + -3P = 2P + -2P

Combine like terms: 2P + -2P = 0
90 + -3P = 0

Add '-90' to each side of the equation.
90 + -90 + -3P = 0 + -90

Combine like terms: 90 + -90 = 0
0 + -3P = 0 + -90
-3P = 0 + -90

Combine like terms: 0 + -90 = -90
-3P = -90

Divide each side by '-3'.
P = 30

Simplifying
P = 30

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