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受欢迎的代数 >

(110-94.79)/(110-90)=(5-x)/(5-2.5)

解答

\frac{110 - 94.79}{110 - 90} = \frac{5 - x}{5 - 2.5}

解答

x = 3.09875

求解步骤

\frac{110 - 94.79}{110 - 90} = \frac{5 - x}{5 - 2.5}

交换两边

\frac{5 - x}{5 - 2.5} = \frac{110 - 94.79}{110 - 90}

数字相减:

110 - 94.79 = 15.21

\frac{5 - x}{5 - 2.5} = \frac{15.21}{110 - 90}

数字相减:

110 - 90 = 20

\frac{5 - x}{5 - 2.5} = \frac{15.21}{20}

在两边乘以

5 - 2.5

5 - x = 1.90125

将

5

到右边

- x = - 3.09875

两边除以

- 1

x = 3.09875

作图

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