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Phổ biến Word Problems >

one number is 2 less than a second number. Twice the second number is 7 less than 2 times the first. Find the two numbers.

Lời Giải

o n e n u mb er i s 2 l ess t han a seco n d n u mb er . Tw i ce t h e seco n d n u mb er i s 7 l ess t han 2 t im es t h e f i rs t . F in d t h e tw o n u mb ers .

Lời Giải

Kh \overset{o}{^} ng c \overset{o}{ˊ} nghi ệ m

Các bước giải pháp

Represent the numbers with

x and y

:

number 1 : x

number 2 : y

A.T.Q.:

x = y - 2

2 y = 2 x - 7

x = y - 2, 2 y = 2 x - 7 :

Không có nghiệm

Kh \overset{o}{^} ng c \overset{o}{ˊ} nghi ệ m

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