Question

7x=2(x-50) solve for x.

Answer 1

x= -20

Explanation:

So the first thing you would want to do is multiply 2 on both x and -50. After that you will end up with 7x = 2x - 100. Then you will need to subtract x on both sides getting 5x = -100. Finally you will need to divide 5 on both sides getting x = -20

Answer 2

x = -20

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
• Subtract Property of Equality

Algebra I

• Term/Coefficients

Explanation:

Step 1: Define

7x = 2(x - 50)

Step 2: Solve for x

1. Distribute 2: 7x = 2x - 100
2. Isolate x term: 5x = -100
3. Isolate x: x = -20