Question

3×4+9×6-(27+9÷4×5 по действиям

Answer 1

(3*4)+(9*6)-(27+4):9*5)=12+54-(20)= 46

Answer 2

3*4+9*6-(27+9):4*5= 21
(27+9)=36
3*4=12
9*6=54
36:4=9
9*5=45
12+54-45=21

Answer 3

To solve the expression using the order of operations, also known as PEMDAS (Parentheses, Exponents, Multiplication and Division from left to right, Addition and Subtraction from left to right), let's break it down step by step:

1. Start with the parentheses: 27 + 9 ÷ 4 × 5 = 27 + 2.25 × 5 (Evaluating the division: 9 ÷ 4 = 2.25) = 27 + 11.25

2. Perform multiplication: 3 × 4 + 9 × 6 - (27 + 11.25) = 12 + 54 - (27 + 11.25)

3. Evaluate the addition inside the parentheses: 3 × 4 + 9 × 6 - (38.25) = 12 + 54 - 38.25

4. Perform addition and subtraction from left to right: 12 + 54 - 38.25 = 66 - 38.25 = 27.75

Therefore, the value of the expression 3×4+9×6-(27+9÷4×5) is 27.75.