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Phổ biến Word Problems >

Seven times the larger of two numbers decreased by five times the smaller is 42 . Nine times the larger increased by 8 times the smaller is 256 . Find the numbers.

Lời Giải

S e v e n t im es t h e l a r g er o f tw o n u mb ers d ecre a se d b y f i v e t im es t h e s ma ll er i s 42 . N in e t im es t h e l a r g er in cre a se d b y 8 t im es t h e s ma ll er i s 256 . F in d t h e n u mb ers .

Lời Giải

The numbers : 16, 14

Các bước giải pháp

Represent the numbers with

x and y

:

number 1 : x

number 2 : y

A.T.Q.:

7 x - 5 y = 42

9 x + 8 y = 256

7 x - 5 y = 42, 9 x + 8 y = 256 : x = 16, y = 14

The numbers : 16, 14

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