The sum of three numbers is 123. The second number is 9 less than two times the first number. The third number is six more than

Question

4 years ago

8

three times the first number. Find the three numbers

1 answer:

Mrrafil [7] · Answer 1 · 2022-01-25T11:52:45+03:00

Answer:

Step-by-step explanation:

x - the first number

2x - two times the first number

2x-9 - 9 less than two times the first number = the second number

3x - three times the first number

3x+6 - six more than three times the first number = the third number

The sum of three numbers is 123:

x + 2x-9 + 3x+6 =123

6x - 3 = 123

6x = 126

x = 21

2x-9 = 2•21-9 = 33

3x+6 = 3•21+6 = 69

Check: 21+33+69 = 123