Question

4/15+2/5 , 7/10-1/2 , 1/3-1/4

Answer 1

Ответ:

1)10/15=2/3

2) 12/10=1 2/10

3)7/12

Answer 2

To solve these arithmetic problems involving fractions, let's perform the calculations step by step:

1. Addition: 4/15 + 2/5 To add these fractions, we need to find a common denominator. The least common multiple (LCM) of 15 and 5 is 15. So we can rewrite the fractions with a common denominator of 15:

(4/15) + (2/5) = (4/15) + (6/15)

Now that they have the same denominator, we can add the numerators:

= (4 + 6)/15 = 10/15

Since the numerator and denominator have a common factor of 5, we can simplify the fraction:

= (10/5) / (15/5) = 2/3

So, 4/15 + 2/5 equals 2/3.

2. Subtraction: 7/10 - 1/2 Again, we need to find a common denominator. The LCM of 10 and 2 is 10. Rewriting the fractions:

(7/10) - (1/2) = (7/10) - (5/10)

Now we can subtract the numerators:

= (7 - 5)/10 = 2/10

Simplifying the fraction:

= (2/2) / (10/2) = 1/5

So, 7/10 - 1/2 equals 1/5.

3. Subtraction: 1/3 - 1/4 Once again, let's find a common denominator. The LCM of 3 and 4 is 12. Rewriting the fractions:

(1/3) - (1/4) = (4/12) - (3/12)

Now we can subtract the numerators:

= (4 - 3)/12 = 1/12

Thus, 1/3 - 1/4 equals 1/12.

To summarize:

• 4/15 + 2/5 = 2/3
• 7/10 - 1/2 = 1/5
• 1/3 - 1/4 = 1/12