Question

1) 1/4 + 2/5 + 3/4 + 3/5

Answer 1

$\frac{1}{4} + \frac{2}{5} + \frac{3}{4} + \frac{3}{5} = \frac{1}{4} + \frac{3}{4} + \frac{2}{5} + \frac{3}{5} = \frac{4}{4} + \frac{5}{5} = 1 + 1 = 2$

Ответ: 2

Answer 2

Ответ: 2:) Приводим к 20 - общему знаменателю

Answer 3

To add the fractions 1/4, 2/5, 3/4, and 3/5, you need to find a common denominator and then add the numerators. Here's the step-by-step solution:

Step 1: Find the least common multiple (LCM) of the denominators, which in this case is 20.

Step 2: Convert each fraction so that they all have a denominator of 20.

1/4 = (1/4) * (5/5) = 5/20 2/5 = (2/5) * (4/4) = 8/20 3/4 = (3/4) * (5/5) = 15/20 3/5 = (3/5) * (4/4) = 12/20

Step 3: Add the numerators of the fractions.

5/20 + 8/20 + 15/20 + 12/20 = (5 + 8 + 15 + 12) / 20 = 40/20

Step 4: Simplify the resulting fraction, if possible.

40/20 = 2/1 = 2

Therefore, the sum of 1/4, 2/5, 3/4, and 3/5 is 2.