Question

2/15 + 5/12=(2)2/3:1,6=-3,6:0,08=(1)3/7*(-3,5)=​

Answer 1

Ответ:

Пошаговое объяснение:

2/15 + 5/12= 8/60 + 25/60 = 33/60 = 11/20

(2)2/3:1,6= 8/3 : 16/10 = 8/3 * 5/8 = 5/3 = (1)2/3

-3,6:0,08= -36/10 : 8/100 = -18/5 * 25/2 = -45

(1)3/7*(-3,5)=​ 10/7 *(-35/10) = -5

Answer 2

Ответ:

Пошаговое объяснение:

2/15 + 5/12 = 8/60 + 25/60 = 33/60 = 11/20

2. 2/3 : 1,6 = 2. 2/3 : 1. 6/10 = 8/3 : 16/10 = 8/3 * 10/16 = 1/3 * 10/2 = 10/6 =

5/3 = 1. 2/3

-3,6 : 0,08 = -45

1. 3/7 * (-3,5) = 1. 3/7 * (-3. 5/10) = 10/7 * (-35/10) = -35/7 = -5

Answer 3

Let's solve each part of the expression step by step:

1. $\frac{2}{15} + \frac{5}{12}$: To add these fractions, you need to find a common denominator. In this case, the common denominator is 60. So, you'll need to convert both fractions to have the denominator of 60:
   • $\frac{2}{15} = \frac{2 \cdot 4}{15 \cdot 4} = \frac{8}{60}$
   • $\frac{5}{12} = \frac{5 \cdot 5}{12 \cdot 5} = \frac{25}{60}$

Now, add these fractions: $\frac{8}{60} + \frac{25}{60} = \frac{8 + 25}{60} = \frac{33}{60}$

You can simplify this fraction by dividing both the numerator and denominator by their greatest common divisor, which is 3: $\frac{33}{60} = \frac{33 ÷ 3}{60 ÷ 3} = \frac{11}{20}$

So, $\frac{2}{15} + \frac{5}{12} = \frac{11}{20}$.

2. $(2) \cdot \frac{2}{3} : 1.6$: First, calculate $2 \cdot \frac{2}{3}$: $2 \cdot \frac{2}{3} = \frac{4}{3}$

Now, divide $\frac{4}{3}$ by 1.6: $\frac{4}{3} : 1.6 = \frac{4}{3} \div 1.6 = \frac{4}{3} \cdot \frac{10}{16} = \frac{40}{48}$

You can simplify this fraction by dividing both the numerator and denominator by their greatest common divisor, which is 8: $\frac{40}{48} = \frac{40 ÷ 8}{48 ÷ 8} = \frac{5}{6}$

So, $(2) \cdot \frac{2}{3} : 1.6 = \frac{5}{6}$.

3. $-3.6 : 0.08$: Simply divide -3.6 by 0.08: $-3.6 \div 0.08 = -45$

So, $-3.6 : 0.08 = -45$.

4. $(1) \cdot \frac{3}{7} \cdot (-3.5)$: First, calculate $(1) \cdot \frac{3}{7}$: $(1) \cdot \frac{3}{7} = \frac{3}{7}$

Now, multiply $\frac{3}{7}$ by -3.5: $\frac{3}{7} \cdot (-3.5) = \frac{3 \cdot (-3.5)}{7} = \frac{-10.5}{7}$

You can simplify this fraction by dividing both the numerator and denominator by their greatest common divisor, which is 0.5: $\frac{-10.5}{7} = \frac{-10.5 ÷ 0.5}{7 ÷ 0.5} = \frac{-21}{7}$