Question

Solve the equation –15 + 10y = 25 for y.

Answer 1

y = 4

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

1. Brackets
2. Parenthesis
3. Exponents
4. Multiplication
5. Division
6. Addition
7. Subtraction

• Left to Right

Equality Properties

• Multiplication Property of Equality
• Division Property of Equality
• Addition Property of Equality
• Subtraction Property of Equality

Explanation:

Step 1: Define

Identify

-15 + 10y = 25

Step 2: Solve for y

1. [Addition Property of Equality] Add 15 on both sides: 10y = 40
2. [Division Property of Equality] Divide 10 on both sides: y = 4