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受欢迎的 Word Problems >

he sum of two numbers is 21. Three times the larger is equal to four times the smaller.Find them.

解答

h e s u m o f tw o n u mb ers i s 21. T h ree t im es t h e l a r g er i s e q u a l t o f o u r t im es t h e s ma ll er . F in d t h e m .

解答

The numbers : 12, 9

求解步骤

Represent the numbers with

x and y

:

number 1 : x

number 2 : y

A.T.Q.:

x + y = 21

3 x = 4 y

x + y = 21, 3 x = 4 y : x = 12, y = 9

The numbers : 12, 9

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