Question

In which of the expressions below will = 2.5? Select all that apply. A) 10x + 20 / 9 = 5 B) 10x + 12 = 38 C) 9x + 18 = 45 D) 6x = 15 E) 12x - 4 = 26

Answer 1

A, D, and E

Explanation:

A

(10x + 20)/9 = 5

10x + 20 = 5 * 9

10x = 45 - 20

10x = 25

x = 2.5

B

10x + 12 = 38

10x = 26

x = 2.6

C

9x + 18 = 45

9x = 27

x = 3

D

6x = 15

x = 15/6

x = 2.5

E

12x - 4 = 26

12x = 30

x = 2.5