Phổ biến >

The sum of three numbers is 14. The sum of twice the first number, 3 times the second number, and 4 times the third number is 36. The hiệu between 3 times the first number and the second number is 20. Find the three numbers.

Lời Giải

The sum of three numbers is 14. The sum of twice the first number, 3 times the second number, and 4 times the third number is 36. The difference between 3 times the first number and the second number is 20. Find the three numbers.

Lời Giải

The numbers : 8, 4, 2

Các bước giải pháp

Represent the numbers with

x, y, z

number 1 : x

number 2 : y

number 3 : z

A.T.Q.:

x + y + z = 14

2 x + 3 y + 4 z = 36

3 x - y = 20

x + y + z = 14, 2 x + 3 y + 4 z = 36, 3 x - y = 20 : x = 8, y = 4, z = 2

The numbers : 8, 4, 2

Ví dụ phổ biến

the product of two consecutive positive integers is 20. find the value of the greater integer.Marissa drives for 3hours at 60km per hour. Maricel drives 260kilometers in 4hours. How far would Marissa travel if she drove for 3hours at the same speed as Maricel The product of two consecutive positive odd integers is 35. Find the value of the greater integer the sum of ten and quotient of a number and 3 is equal to the hiệu between twice the number and 5 Find the compound amount for the deposit and the amount of interested earned.\15, 000 at %5 compounded monthly for 18 years. The compound amount after 18 years is\$

The sum of three numbers is 14. The sum of twice the first​ number, 3 times the second​ number, and 4 times the third number is 36. The hiệu between 3 times the first number and the second number is 20. Find the three numbers.

Lời Giải

Lời Giải

Ví dụ phổ biến

The sum of three numbers is 14. The sum of twice the first number, 3 times the second number, and 4 times the third number is 36. The hiệu between 3 times the first number and the second number is 20. Find the three numbers.