Question

The sum of three numbers is 72
The second number is 7 times the first.
The third number is 18 less than the second.
What is the first number?​

Answer 1

Answer:

6

Step-by-step explanation:

The first number: a

The second number: b

The third number: c

a+b+c=72

b=7a

b-c=18

⇒a=6; b=42;

c= 24