Question

5 4/7:1 5/21—(5 2/15*3/22+1 4/15

Answer 1

Ответ:- 1  79/105

Пошаговое объяснение:

1) 39/7 * 21/26 = 3/7 * 1/2 = 3/14

2) 77/15 * 3/22 = 7/5 * 1/2 = 7/10

3) 7 / 10 + 19\15 = (21+38)/30= 59/30

4) 3/14 - 59/30= (45-413)/210= -368/210 =- 184/105

Answer 2

To solve the expression, let's break it down step by step:

Step 1: Simplify the multiplication and addition within the parentheses.

5 2/15 * 3/22 = (5 * 15 + 2) / 15 * 3/22 = (77/15) * 3/22 = 231/330

Step 2: Add the fraction 1 4/15 to the result from Step 1.

231/330 + 1 4/15 = 231/330 + (1 * 15 + 4) / 15 = 231/330 + 19/15 = (231 * 15 + 330 * 19) / (330 * 15) = (3465 + 6270) / 4950 = 9735/4950

Step 3: Divide the fraction obtained in Step 2 by the fraction 5 4/7.

9735/4950 ÷ 5 4/7 = (9735/4950) ÷ (5 * 7 + 4) / 7 = (9735/4950) ÷ (39/7) = (9735/4950) * (7/39) = (9735 * 7) / (4950 * 39) = 68145/193050

Therefore, the simplified expression is 68145/193050.