(21+p)+(2p-36)=645

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Solution for (21+p)+(2p-36)=645 equation:


Simplifying
(21 + p) + (2p + -36) = 645

Remove parenthesis around (21 + p)
21 + p + (2p + -36) = 645

Reorder the terms:
21 + p + (-36 + 2p) = 645

Remove parenthesis around (-36 + 2p)
21 + p + -36 + 2p = 645

Reorder the terms:
21 + -36 + p + 2p = 645

Combine like terms: 21 + -36 = -15
-15 + p + 2p = 645

Combine like terms: p + 2p = 3p
-15 + 3p = 645

Solving
-15 + 3p = 645

Solving for variable 'p'.

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

Add '15' to each side of the equation.
-15 + 15 + 3p = 645 + 15

Combine like terms: -15 + 15 = 0
0 + 3p = 645 + 15
3p = 645 + 15

Combine like terms: 645 + 15 = 660
3p = 660

Divide each side by '3'.
p = 220

Simplifying
p = 220

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