Question

Расставь порядок действия и найди значения выражении. 77-18÷3×5+21=

Answer 1

1. 18/3=6
2.6х5=30
3.77-30=47
4.47+21=68
77-18/3х5+21=68

Answer 2

77-18÷3×5+21=26

1.18÷3=6

2.6×5=30

3.30+21=51

4.77-51=26

Answer 3

To solve the expression 77 - 18 ÷ 3 × 5 + 21, you should follow the order of operations, which is commonly remembered by the acronym PEMDAS:

1. Parentheses (or Brackets)
2. Exponents (or Powers)
3. Multiplication and Division (from left to right)
4. Addition and Subtraction (from left to right)

Now, let's apply these rules step by step:

1. First, perform the division: 18 ÷ 3 = 6.
2. Then, perform the multiplication: 6 × 5 = 30.
3. Next, perform the addition: 77 - 30 = 47.
4. Finally, perform the last addition: 47 + 21 = 68.

So, the correct value of the expression is 68.