Question

Find the value of x.

Answer 1

Answer:

20

Step-by-step explanation:

to understand this

you need to know about:

• equation
• PEMDAS

tips and formulas:

• a straight line contains 180°

let's solve:

according to the question

7x+x+20=180

=>8x+20=180

=>8x=160

therefore

x=20