Question

3-5/12 10-7/15 7-8/3​

Answer 1

Ответ:

   дробями

3-5/12= 2  7/12

10-7/15= 9  8/15

7-8/3​= 4  1/3

делением и вычитание

3-5/12=2.5

10-7/15=9.5

7-8/3​=4.33333333333

Answer 2

To perform the calculations with the given fractions, you can follow these steps:

1. Find a common denominator for all the fractions.
2. Perform the subtraction.

Let's break it down:

1. Find a common denominator:

   • The denominators are 12, 15, and 3. The least common multiple (LCM) of these numbers is 60.

2. Rewrite the fractions with a common denominator of 60:

   • $\frac{3}{12} = \frac{3 \times 5}{12 \times 5} = \frac{15}{60}$
   • $\frac{7}{15} = \frac{7 \times 4}{15 \times 4} = \frac{28}{60}$
   • $\frac{8}{3} = \frac{8 \times 20}{3 \times 20} = \frac{160}{60}$

Now, the expression becomes:

$\frac{15}{60} - \frac{28}{60} - \frac{160}{60}$

3. Perform the subtraction:

$\frac{15 - 28 - 160}{60}$

$\frac{-173}{60}$

So, the result of the expression $\frac{3}{12} - \frac{7}{15} - \frac{8}{3}$ is $\frac{-173}{60}$.