Question

3
Solve : 8-3(1-m) = -7​

Answer 1

m = -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

8 - 3(1 - m) = -7

Step 2: Solve for m

1. [Subtraction Property of Equality] Subtract 8 on both sides: -3(1 - m) = -15
2. [Division Property of Equality] Divide -3 on both sides: 1 - m = 5
3. [Subtraction Property of Equality] Subtract 1 on both sides: -m = 4
4. [Division Property of Equality] Divide -1 on both sides: m = -4