Question

Alex was thinking of a number. Alex doubles it and adds 0.9 to get an answer of 21.2. Form an equation with x from the information.

Answer 1

Answer: 2x + 0.9 = 21.2

and x = 10.15

Explanation:

Answer 2

2x + 0.9 = 21.2

Explanation:

Let x be the number

The number was doubled so it should be 2x, then add 0.9 equals to 21.2