We need to evaluate the expression $2\frac{2}{3} \div (-\frac{8}{9}) \times (-1\frac{3}{5})$.

ArithmeticFractionsMixed NumbersOrder of OperationsRational Numbers
2025/5/4

1. Problem Description

We need to evaluate the expression 223÷(89)×(135)2\frac{2}{3} \div (-\frac{8}{9}) \times (-1\frac{3}{5}).

2. Solution Steps

First, we convert the mixed numbers to improper fractions:
223=2×3+23=6+23=832\frac{2}{3} = \frac{2 \times 3 + 2}{3} = \frac{6+2}{3} = \frac{8}{3}
135=1×5+35=5+35=85-1\frac{3}{5} = -\frac{1 \times 5 + 3}{5} = -\frac{5+3}{5} = -\frac{8}{5}
So, the expression becomes:
83÷(89)×(85)\frac{8}{3} \div (-\frac{8}{9}) \times (-\frac{8}{5})
Next, we change the division to multiplication by taking the reciprocal of the second fraction:
83×(98)×(85)\frac{8}{3} \times (-\frac{9}{8}) \times (-\frac{8}{5})
Now, we can multiply the fractions:
83×(98)×(85)=8×(9)×(8)3×8×5\frac{8}{3} \times (-\frac{9}{8}) \times (-\frac{8}{5}) = \frac{8 \times (-9) \times (-8)}{3 \times 8 \times 5}
Simplify the expression:
8×(9)×(8)3×8×5=8×9×83×8×5\frac{8 \times (-9) \times (-8)}{3 \times 8 \times 5} = \frac{8 \times 9 \times 8}{3 \times 8 \times 5} (since a negative times a negative is a positive)
We can cancel out the common factor of 8:
8×9×83×8×5=9×83×5\frac{8 \times 9 \times 8}{3 \times 8 \times 5} = \frac{9 \times 8}{3 \times 5}
We can simplify by dividing 9 by 3 to get 3:
9×83×5=3×85\frac{9 \times 8}{3 \times 5} = \frac{3 \times 8}{5}
Multiply the remaining numbers:
3×85=245\frac{3 \times 8}{5} = \frac{24}{5}
Finally, convert the improper fraction back to a mixed number:
245=445\frac{24}{5} = 4\frac{4}{5}

3. Final Answer

4454\frac{4}{5}

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