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受欢迎的代数 >

1/3 x+1/4 = 2/5*(x-3/4)

解答

\frac{1}{3} x + \frac{1}{4} = \frac{2}{5} \cdot (x - \frac{3}{4})

解答

x = \frac{33}{4}

+1

十进制

x = 8.25

求解步骤

\frac{1}{3} x + \frac{1}{4} = \frac{2}{5} (x - \frac{3}{4})

展开

\frac{2}{5} (x - \frac{3}{4}) : \frac{2}{5} x - \frac{3}{10}

\frac{1}{3} x + \frac{1}{4} = \frac{2}{5} x - \frac{3}{10}

将

\frac{1}{4}

到右边

\frac{1}{3} x = - \frac{11}{20} + \frac{2}{5} x

将

\frac{2}{5} x

para o lado esquerdo

- \frac{1}{15} x = - \frac{11}{20}

在两边乘以

- 15

x = \frac{33}{4}

作图

流行的例子

200 x + 50 = 8000

4(x+4)-2x=6(2x+1)

4 (x + 4) - 2 x = 6 (2 x + 1)

2/3 x+4/5 = 5/6 x-3/10

\frac{2}{3} x + \frac{4}{5} = \frac{5}{6} x - \frac{3}{10}

solvefor x,7x+5y+25=0

so l v e f or x, 7 x + 5 y + 25 = 0

2 + 2 y = 8