Question

9 2/3 * 1,2 + 2 2/3 * 1,2 - 2 1/3 * 1,2​

Answer 1

Ответ:

Пошаговое объяснение:

9 2/3 * 1,2 + 2 2/3 * 1,2 - 2 1/3 * 1,2=1,2*(9 2/3

+2 2/3-2 1/3)=2,1*10=21

Answer 2

Пошаговое объяснение:

9 2/3*1/2+2 2/3*1/2-2 1/3*1/2=29/3*6/5+8/3*6/5-7/3*6/5=29*2/5+8*2/5-7*2/5=58/5+16/5-14/5=58+16-14/5=12

Answer 3

To solve the given arithmetic expression, follow these steps:

1. Convert all mixed numbers to improper fractions.
2. Perform the multiplications.
3. Perform the additions and subtractions.

Let's break it down:

1. Convert mixed numbers to improper fractions:

   • $9 \frac{2}{3}$ as an improper fraction is $9 + \frac{2}{3} = \frac{27}{3} + \frac{2}{3} = \frac{29}{3}$
   • $2 \frac{2}{3}$ as an improper fraction is $2 + \frac{2}{3} = \frac{6}{3} + \frac{2}{3} = \frac{8}{3}$
   • $2 \frac{1}{3}$ as an improper fraction is $2 + \frac{1}{3} = \frac{6}{3} + \frac{1}{3} = \frac{7}{3}$

2. Perform the multiplications:

   • $\frac{29}{3} \times 1.2 = \frac{29 \times 1.2}{3}$
   • $\frac{8}{3} \times 1.2 = \frac{8 \times 1.2}{3}$
   • $\frac{7}{3} \times 1.2 = \frac{7 \times 1.2}{3}$

3. Perform the additions and subtractions:

   • $\frac{29 \times 1.2}{3} + \frac{8 \times 1.2}{3} - \frac{7 \times 1.2}{3}$

Now, calculate the numerators of the fractions after multiplication:

• Numerator of $\frac{29 \times 1.2}{3} = 34.8$
• Numerator of $\frac{8 \times 1.2}{3} = 9.6$
• Numerator of $\frac{7 \times 1.2}{3} = 8.4$

Sum up the numerators and calculate the final result: $\frac{34.8 + 9.6 - 8.4}{3} = \frac{36}{3} = 12$

So, the result of the expression $9 \frac{2}{3} \times 1.2 + 2 \frac{2}{3} \times 1.2 - 2 \frac{1}{3} \times 1.2$ is $12$.