Question

5*8+9*2=170 71-41/5=6 65-27-12=50 64/7+1*9=72 Поставьте скобки так,чтобы ответы были верными.

Answer 1

(5*8)+(9*2)=170
(71-41):5=6
(65-27)-12=50
(64:7)+(1*9)=72

Answer 2

5*(8+9)*2 (71-41):5 65-(27-12) 64:(7+1)*2

Answer 3

To make the equations correct by adding parentheses, we need to ensure the order of operations (PEMDAS/BODMAS) is followed correctly. This means performing operations in the following order: Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction.

Let's apply parentheses to each equation:

1. 5 * 8 + 9 * 2 = 170 We can add parentheses like this: (5 * 8) + (9 * 2) = 40 + 18 = 58

2. 71 - 41 / 5 = 6 We can add parentheses like this: 71 - (41 / 5) = 71 - 8.2 = 62.8 (approximately)

3. 65 - 27 - 12 = 50 We can add parentheses like this: (65 - 27) - 12 = 38 - 12 = 26

4. 64 / 7 + 1 * 9 = 72 We can add parentheses like this: (64 / 7) + (1 * 9) = 9.142857... + 9 = 18.142857... (approximately)

After adding parentheses, the equations are not equal to the provided answers. It seems there might be a misunderstanding or an error in the given answers. If you have any other equations or want to clarify the answers you provided, please let me know!