Question

Решить 14 2/5+(7 1/12+2,15-5 19/30)-(6÷3 1/13)*(8 8/15÷8)

Answer 1

Ответ:

Пошаговое объяснение:

72/5+(85/12+215/100-169/30)-(6÷40/13)*(128/15÷8)=

72/5+(85/12+43/20-169/30)-(6*13/40)*(128/15*1/8)=

72/5+(85/12+43/20-169/30)-(6*13/40)*(128/15*1/8)=

72/5+(85*5+43*3-169*2)/60-78/40*128/120=

72/5+216/60-52/25 = 72/5+54/15-52/25 =

(72*15+54*5-52*3)/75 =1 194/75 = 398/25= 15 23/25

Answer 2

To solve the expression, we need to follow the order of operations, which is typically remembered with the acronym PEMDAS: Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right). Let's simplify the expression step by step:

1. Deal with parentheses: 7 1/12 + 2.15 - 5 19/30 = 7.08333 + 2.15 - 5.63333 ≈ 3.6

2. Divide: 6 ÷ 3 1/13 = 6 ÷ (3 + 1/13) = 6 ÷ 3.07692 ≈ 1.95

3. Divide (again): 8 8/15 ÷ 8 = 8.53333 ÷ 8 ≈ 1.06667

4. Multiply: 1.95 * 1.06667 ≈ 2.0833

5. Add: 14 2/5 + 3.6 ≈ 17.4

6. Subtract: 17.4 - 2.0833 ≈ 15.3167

Therefore, the solution to the expression is approximately 15.3167.