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受欢迎的 Word Problems >

four time the sum of a number x and a number y is equal to 20

解答

f o u r t im e t h e s u m o f a n u mb er x an d a n u mb er y i s e q u a l t o 20

解答

The number : 2 \frac{1}{2}

求解步骤

Represent the number with

x

A.T.Q.:

4 (x + x) = 20

求解

x, 4 (x + x) = 20 : x = \frac{5}{2}

将假分式转换为带分数:

\frac{5}{2} = 2 \frac{1}{2}

The number : 2 \frac{1}{2}

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