Question

Вычислите 6/35+3/10, 8/15-4/9, 4/15+7/12

Answer 1

Ответ:

Пошаговое объяснение:

6/35+3/10=12\70+21\70=33\70

8/15-4/9=24\45-20\45=4\45

4/15+7/12=16\60+35\60=51\60

Answer 2

6/35+3/10=12/70+21/70=33/70

8/15-4/9=24/45-20/45=4/45

4/15+7/12=16/60+35/60=51/60=17/20

Answer 3

6/35 + 3/10:

To add these fractions, we need to find a common denominator. The least common multiple (LCM) of 35 and 10 is 70.

6/35 can be written as 12/70 (multiply the numerator and denominator by 2). 3/10 can be written as 21/70 (multiply the numerator and denominator by 7).

Now we can add the fractions:

12/70 + 21/70 = 33/70

So 6/35 + 3/10 = 33/70.

8/15 - 4/9:

To subtract these fractions, we also need to find a common denominator. The LCM of 15 and 9 is 45.

8/15 can be written as 24/45 (multiply the numerator and denominator by 8). 4/9 can be written as 20/45 (multiply the numerator and denominator by 5).

Now we can subtract the fractions:

24/45 - 20/45 = 4/45

So 8/15 - 4/9 = 4/45.

4/15 + 7/12:

Again, we need to find a common denominator. The LCM of 15 and 12 is 60.

4/15 can be written as 16/60 (multiply the numerator and denominator by 4). 7/12 can be written as 35/60 (multiply the numerator and denominator by 5).

Now we can add the fractions:

16/60 + 35/60 = 51/60

Simplifying the fraction, we get:

17/20

So 4/15 + 7/12 = 17/20.