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受欢迎的代数 >

1/4 a-2/5 = 3/4-2/3 a

解答

\frac{1}{4} a - \frac{2}{5} = \frac{3}{4} - \frac{2}{3} a

解答

a = \frac{69}{55}

+1

十进制

a = 1.25454 \dots

求解步骤

\frac{1}{4} a - \frac{2}{5} = \frac{3}{4} - \frac{2}{3} a

将

\frac{2}{5}

到右边

\frac{1}{4} a = \frac{23}{20} - \frac{2}{3} a

将

\frac{2}{3} a

para o lado esquerdo

\frac{11}{12} a = \frac{23}{20}

在两边乘以

12

11 a = \frac{69}{5}

两边除以

11

a = \frac{69}{55}

作图

流行的例子

3x+1-(x-4)-[2(x-3)-3(1-2x)]=-(x+2)

3 x + 1 - (x - 4) - [2 (x - 3) - 3 (1 - 2 x)] = - (x + 2)

2x+3(5+x)=5x+15

2 x + 3 (5 + x) = 5 x + 15

14 y - 8 = 13

4-(7-x}{12}=\frac{5x)/3-(5-3x)/4

4 - \frac{7 - x}{12} = \frac{5 x}{3} - \frac{5 - 3 x}{4}

(5n-3)/4 = n/5+3/20

\frac{5 n - 3}{4} = \frac{n}{5} + \frac{3}{20}