Question

Solve the formula for a.
P= a + b + c
a =

Answer 1

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`P = a + b + c`

`a + b + c = P`

Subtract sides c

`a + b + c - c = P - c`

`a + b = P - c`

Subtract sides b

`a + b - b = P - c - b`

`a = P - b - c`

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Answer 2

a = P - b - c

General Formulas and Concepts:

• Order of Operations: BPEMDAS

• Equality Properties

Explanation:

Step 1: Define equation

P = a + b + c

Step 2: Solve for a

1. Subtract b on both sides: P - b = a + c
2. Subtract c on both sides: P - b - c = a
3. Rewrite: a = P - b - c