Question

1/4-1/6,3/5+1/3,4/5+3/4,7/10-1/4

Answer 1

1/4-1/6=3/12-2/12=1/12
3/5+1/3=9/15+5/15=14/15
4/5+3/4=16/20+15/20=21/20=1 целая 1/20
7/10-1/4=14/20-5/20=9/20

Answer 2

To calculate the expression 1/4 - 1/6, 3/5 + 1/3, 4/5 + 3/4, and 7/10 - 1/4, we can follow the order of operations (also known as PEMDAS - Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction) to simplify the expression step by step.

Let's break it down:

1/4 - 1/6: To subtract fractions, we need to have a common denominator. In this case, the common denominator is 12. So, we rewrite the expression as (1/4)*(3/3) - (1/6)*(2/2) = 3/12 - 2/12 = 1/12.

3/5 + 1/3: Again, we need a common denominator to add fractions. The common denominator is 15. So, we rewrite the expression as (3/5)*(3/3) + (1/3)*(5/5) = 9/15 + 5/15 = 14/15.

4/5 + 3/4: To add fractions, we need a common denominator. The common denominator is 20. So, we rewrite the expression as (4/5)*(4/4) + (3/4)*(5/5) = 16/20 + 15/20 = 31/20.

7/10 - 1/4: Again, we need a common denominator to subtract fractions. The common denominator is 20. So, we rewrite the expression as (7/10)*(2/2) - (1/4)*(5/5) = 14/20 - 5/20 = 9/20.

Therefore, the simplified expression is: 1/4 - 1/6 = 1/12 3/5 + 1/3 = 14/15 4/5 + 3/4 = 31/20 7/10 - 1/4 = 9/20