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人気のある Word Problems >

Solve the system of equations x/6+y/8 =14 and x/8+y/6 =14

解

\frac{x}{6} + \frac{y}{8} = 14, \frac{x}{8} + \frac{y}{6} = 14

解

x = 48, y = 48

解答ステップ

[\frac{x}{6} + \frac{y}{8} = 14 \frac{x}{8} + \frac{y}{6} = 14]

以下のために

x

を分離:

\frac{x}{6} + \frac{y}{8} = 14 : x = 84 - \frac{3 y}{4}

代用

x = 84 - \frac{3 y}{4}

[\frac{84 - \frac{3 y}{4}}{8} + \frac{y}{6} = 14]

簡素化

[\frac{1008 + 7 y}{96} = 14]

以下のために

y

を分離:

\frac{1008 + 7 y}{96} = 14 : y = 48

以下のため:

x = 84 - \frac{3 y}{4}

代用

y = 48

x = 84 - \frac{3 \cdot 48}{4}

84 - \frac{3 \cdot 48}{4} = 48

x = 48

equation系の解:

x = 48, y = 48

人気の例

Sanjay borrowed 7,000 at a simple interest rate of 3% per year. After a certain number of years he had paid 840 in interest altogether. How many years was that?seventeen is eight more than a number Five times the sum of a number and 17 is at least-15.3 years from now david's age will be 3 times his age 12 years ago. How old was david 12years ago Serenity is going to invest in an account paying an interest rate of 4.4% compounded continuously. How much would Serenity need to invest, to the nearest hundred dollars, for the value of the account to reach 670 in 11 years?