-5/9 m=1 11/12

解答

- \frac{5}{9} m = 1 \frac{11}{12}

m = - 3 \frac{9}{20}

十进制

m = - 3.45

求解步骤

- \frac{5}{9} m = 1 \frac{11}{12}

将带分数转换为假分式:

1 \frac{11}{12} = \frac{23}{12}

- \frac{5}{9} m = \frac{23}{12}

在两边乘以

9

- 5 m = \frac{69}{4}

两边除以

- 5

m = - \frac{69}{20}

将假分式转换为带分数:

\frac{69}{20} = 3 \frac{9}{20}

m = - 3 \frac{9}{20}

so l v e f or x, 5 x + 2 y = 2

so l v e f or x, 5 x + 4 y = 8

so l v e f or x, y + 2 x = 4

6.5 x + 12 = - 12 + 11 x - 12

so l v e f or x, 3 x + 4 y = 14