Question

3. Three less than twice a number is 15. What is the number?

Answer 1

Answer:

x =9

Step-by-step explanation:

Let x = be the number

2x -3 =15

Add 3 to each side

2x-3 +3 =15 +3

2x = 18

Divide each side by 2

2x/2 =18/2

x =9

Answer 2

Answer: $x=-6$

Step-by-step explanation:

Three (3) less than (-) twice (2) a number (x) is (=) 15

$3-2x=15$

$-2x=15-3\\-2x=12\\x=\frac{12}{-2}\\ x=-6$