Question

16. Translate and solve the equation.

Seven less than twice a number is 15. Find the number.
A. O 12
B.11
C. 07
D. 22

Answer 1

B. 11

Explanation:

2a - 7 = 15

2a = 15 + 7

2a = 22

a = 22/2

a = 11

Check:

2*11 - 7 = 15

22 - 7 = 15

Answer 2

B) 11

Explanation:

Let n = a number

2n - 7 = 15 Add 7 to both sides

2n - 7 + 7 = 15 + 7

2n = 22 Divide both sides by 2

`(2n)/(2)` =
`(22)/(2)`

n = 11