Given the following two groups of numbers, please fill in the appropriate operation symbols so that the operation results are 24 1) - 4,3,8,1 2) - 3, - 1,1,8 and do not change the number position, Given the following two groups of numbers, please fill in the appropriate operation symbols so that the operation result is 24 （1）-4、3、8、1 （2）-3、-1、1、8 I'll change the score by time.

Given the following two groups of numbers, please fill in the appropriate operation symbols so that the operation results are 24 1) - 4,3,8,1 2) - 3, - 1,1,8 and do not change the number position, Given the following two groups of numbers, please fill in the appropriate operation symbols so that the operation result is 24 （1）-4、3、8、1 （2）-3、-1、1、8 I'll change the score by time.

(8-(-4))(3-1)= 12*2=24
(-3)(-1)(1)(8)=3*8=24

Add appropriate operation symbol to the left of equal sign to make the calculation result correct 7 () 9 () 12 () 3 + 2 = 90

7+9*(12-3)+2

How do three 9s and two 7S get 24 by operation symbols

（9+7+7）+9/9=24

Fill in the appropriate operation symbol to make the equation hold, 9 () 9 () 9 () 9 = 11
Fill in the operation symbol in brackets!

9（+）9（÷）9（＋）9（÷）9=11

12 □ 34 □ 5 □ 6 □ 7 = 1998, fill in the appropriate operation symbol in □, so that the equation is true

12×34×5－6×7=1998

Put the four operation symbols of +, -, ×, △ into () to make the equation hold. (5 () 13 () 7) () (15 () 9) = 12
emergency

(5(×)13(+)7)(÷)(15(-)9)=12

4 4 10 10 = 24 fill in operation symbol can not change position

In the computer, if you are a coder, you should also understand it
（4^4-10）/10=24

10.30.20.20.60.15 = 300.20.20.4 = 2
Add operation symbol and bracket
10.30.20.20.60.15
=300.20.20.4
=280.20.4
=14.4
=10

（（10×30-20）÷20）-（60÷ 15）=（（300- 20）÷20）- 4=（280÷ 20）- 4=14-4=10

7 = 10? Plus operation symbol or bracket

(77-7)/7=10

Add operation symbol and bracket
3 3 3 3=4

（3* 3+ 3）÷ 3=4