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受欢迎的代数 >

(20(12/100))+x(20/100)=(20+x)(16/100)

解答

(20 (\frac{12}{100})) + x (\frac{20}{100}) = (20 + x) (\frac{16}{100})

解答

x = 20

求解步骤

(20 (\frac{12}{100})) + x (\frac{20}{100}) = (20 + x) (\frac{16}{100})

化简

(20 (\frac{12}{100})) + x (\frac{20}{100}) : \frac{12}{5} + \frac{x}{5}

\frac{12}{5} + \frac{x}{5} = (20 + x) (\frac{16}{100})

将

\frac{12}{5}

到右边

\frac{x}{5} = \frac{4 ( x + 20 )}{25} - \frac{12}{5}

乘以最小公倍数

5 x = 4 (x + 20) - 60

展开

4 (x + 20) - 60 : 4 x + 20

5 x = 4 x + 20

将

4 x

para o lado esquerdo

x = 20

作图

流行的例子

5 x + 46 = 2 (x + 5) + 9

solvefor x,y-4= 1/2 (x-8)

so l v e f or x, y - 4 = \frac{1}{2} (x - 8)

7 - x = 7

-1/4 =-1/6-1/2 c

- \frac{1}{4} = - \frac{1}{6} - \frac{1}{2} c

f = (\frac{3}{2})^{- 1}