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Phổ biến Word Problems >

two times a number added to another number is 25. three times the first number minus the other number is 20. find the numbers.

Lời Giải

tw o t im es a n u mb er a dd e d t o an o t h er n u mb er i s 25. t h ree t im es t h e f i rs t n u mb er min u s t h e o t h er n u mb er i s 20. f in d t h e n u mb ers .

Lời Giải

The numbers : 9, 7

Các bước giải pháp

Represent the numbers with

x and y

:

number 1 : x

number 2 : y

A.T.Q.:

2 x + y = 25

3 x - y = 20

2 x + y = 25, 3 x - y = 20 : x = 9, y = 7

The numbers : 9, 7

Ví dụ phổ biến

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