Question

Three less than twice a number is 15. Find the number.

Answer 1

the answer is 9
2x-3=15
add 3 to both sides
2x=18
divide both by 2
x=9

Answer 2

Answer: The number is 9

Explanation:

So first we assign a variable the "number" is x.

So 2x-3=15

Then we solve,

2x-3 =15

+3 +3

2x= 18

2/2x= 18/2

x = 9