Respuesta :

owenfengmouse

Answer:

The second choice, or x = 4.5

Step-by-step explanation:

First. divide both sides by 5.

1 + 2x = 20.

Then subtract each side by 1.

2x = 9.

Divide both sides by 2, and 9/2 = 4.5 .

Answer: x = 4.5

Step-by-step explanation:

Subtract 5 from both sides

5 + 10x - 5 = 50 - 5

Simplify

10x = 45

Divide both sides by 10

10x / 10 = 45 / 10

Simplify

x = 9 / 2

Divide

9 / 2 = 4.5