Question

What is the value of x?

Answer 1

Answer:

x = 10

General Formulas and Concepts:

Pre-Algebra

• Order of Operations: BPEMDAS
• Equality Properties

Geometry

• All angles in a triangle add up to 180°

Step-by-step explanation:

Step 1: Set up equation

(x + 1)° + (10x - 7)° + (8x - 4)° = 180°

Step 2: Solve for x

1. Combine like terms:                         19x - 10 = 180
2. Isolate x term:                                   19x = 190
3. Isolate x:                                            x = 10