Question

The average of three numbers is 9m + 8. Two of the three numbers are 2m + 3 and 4m + 5. Express the third number in terms of m in the simplest form.​

Answer 1

Answer:

21m+16

Step-by-step explanation:

let the third number be x

Given

$2m + 3 + 4m + 5 + x = 3 \times (9m + 8)$

$6m + 8 + x = 27m + 24$

$x = 21m + 16$

Answer 2

Answer:

21m+16

Step-by-step explanation:

let the third number be x

Given

2m + 3 + 4m + 5 + x = 3 \times (9m + 8)2m+3+4m+5+x=3×(9m+8)

6m + 8 + x = 27m + 246m+8+x=27m+24

x = 21m + 16x=21m+16