The 差 of two number is 13. The second number is five less than two times the first number. Write a system of equations and find the two numbers.

解

The difference of two number is 13. The second number is five less than two times the first number. Write a system of equations and find the two numbers.

解

The numbers : - 8, - 21

解答ステップ

Represent the numbers with

x and y

number 1 : x

number 2 : y

A.T.Q.:

x - y = 13

y = 2 x - 5

x - y = 13, y = 2 x - 5 : x = - 8, y = - 21

The numbers : - 8, - 21

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