Question

4,5×2/3-1 5/7:1,2+3 1/5×3 1/8

Answer 1

4,5 * 2/3 - 1 5/7 : 1,2 + 3 1/5 * 3 1/8 = 11 целых 4/7

1) 4,5 * 2/3 = 45/10 * 2/3 = (15*1)/(5*1) = 15/5 = 3
2) 1 5/7 : 1,2 = 12/7 : 12/10 = 12/7 * 10/12 = 10/7 = 1 3/7
3) 3 1/5 * 3 1/8 = 3,2 * 3,125 = 10
4) 3 - 1 3/7 = 2 7/7 - 1 3/7 = 1 4/7
5) 1 4/7 + 10 = 11 4/7

Answer 2

To solve the given expression, follow the order of operations (PEMDAS/BODMAS):

P - Parentheses (simplify expressions within parentheses) E - Exponents (perform any exponentiation) MD - Multiplication and Division (from left to right) AS - Addition and Subtraction (from left to right)

Let's break down the expression step by step:

1. 4,5 × 2/3 - 1 First, convert the comma to a decimal point: 4.5 × 2/3 - 1

   Now, perform multiplication: 4.5 × 2/3 = 9/3 = 3

   Next, perform subtraction: 3 - 1 = 2

2. 5/7 : 1.2 + 3 1/5 × 3 1/8 First, perform division: 5/7 : 1.2 = 5/7 ÷ 1.2 ≈ 0.595238

   Now, perform addition: 0.595238 + 3 = 3.595238

   Next, perform multiplication: 3 1/5 × 3 1/8 = (16/5) × (25/8) = 400/40 = 10

3. Putting it all together: 2 + 10 = 12

Therefore, the final result of the expression is 12.