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受欢迎的代数 >

1/4 (x-2)= 9/5 (x+1/3)

解答

\frac{1}{4} (x - 2) = \frac{9}{5} (x + \frac{1}{3})

解答

x = - \frac{22}{31}

+1

十进制

x = - 0.70967 \dots

求解步骤

\frac{1}{4} (x - 2) = \frac{9}{5} (x + \frac{1}{3})

展开

\frac{1}{4} (x - 2) : \frac{1}{4} x - \frac{1}{2}

展开

\frac{9}{5} (x + \frac{1}{3}) : \frac{9}{5} x + \frac{3}{5}

\frac{1}{4} x - \frac{1}{2} = \frac{9}{5} x + \frac{3}{5}

将

\frac{1}{2}

到右边

\frac{1}{4} x = \frac{11}{10} + \frac{9}{5} x

将

\frac{9}{5} x

para o lado esquerdo

- \frac{31}{20} x = \frac{11}{10}

在两边乘以

20

- 31 x = 22

两边除以

- 31

x = - \frac{22}{31}

作图

流行的例子

2(x+5)-5(x-4)=4x-10

2 (x + 5) - 5 (x - 4) = 4 x - 10

1/2 (2x+5)+6(x-2)=4 1/2

\frac{1}{2} (2 x + 5) + 6 (x - 2) = 4 \frac{1}{2}

4-2(7x-7)-9x=2(-2x-5)-7

4 - 2 (7 x - 7) - 9 x = 2 (- 2 x - 5) - 7

49+2x-(4x-28)=55

49 + 2 x - (4 x - 28) = 55

- 3 = - 19 + \frac{d}{5}