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受欢迎的 Word Problems >

Two numbers have a sum of 19 and a 差集 of 9. Write a system and solve it to identify the two numbers.

解答

Tw o n u mb ers ha v e a s u m o f 19 an d a d i ff ere n ce o f 9. W r i t e a sys t e m an d so l v e i t t o i d e n t i f y t h e tw o n u mb ers .

解答

The numbers : 14, 5

求解步骤

Represent the numbers with

x and y

:

number 1 : x

number 2 : y

A.T.Q.:

x + y = 19

x - y = 9

x + y = 19, x - y = 9 : x = 14, y = 5

The numbers : 14, 5

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