228,598 views
34 votes
34 votes
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

User Timothy Tuti
by
2.6k points

2 Answers

9 votes
9 votes

Answer:

B. 11

Explanation:

2a - 7 = 15

2a = 15 + 7

2a = 22

a = 22/2

a = 11

Check:

2*11 - 7 = 15

22 - 7 = 15

User Chillybin
by
2.9k points
26 votes
26 votes

Answer:

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

User Beniton Fernando
by
3.3k points