-What is 1 / 3 + 3 / 4-5 / 6 + 1 / 2?

-1 / 3 + 3 / 4-6 / 5 + 1 / 2 = - 4 / 12 + 9 / 12-10 / 12 + 6 / 12 = 9 / 12 + 6 / 12-4 / 12-10 / 12 = 15 / 12-4 / 12-10 / 12 = 11 / 12-10 / 12 = 1 / 12,

RELATED INFORMATIONS

1. With a "+" two "-" and a bracket, and without changing the numerical order, connect the nine numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 into the formula with the result of 100
2. It is only allowed to add two '-', one '+' and one bracket. It does not change the order of the numbers, and connects the nine numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 The formula of the result is 100: 1 23 4 5 6 7 8 9 = 100 fast
3. Observe the group of numbers 3 ~ 8, do not change the order of the numbers, add the operation symbols, and make these numbers into a formula, so that the result is equal to 27
4. Observe the numbers 3, 3, 8 and 8. If you don't change the numbers smoothly, add the operation symbols and form a formula to make the result equal to 27
5. Use "add, subtract, multiply and divide" to connect 1, 5, 5 and 5 so that the formula is equal to 24 A mathematical thinking problem, will reward!
6. Write the formula of the result is 24 with four numbers 5,7,7,11 and +, -, *, /, and brackets No, as long as it works
7. The - 3 power of 2 × 10 is equal to
8. 1^3+2^3+3^3+… +What is (n-1) ^ 3 + n ^ 3 equal to?
9. +2! + 3! 3 / 2 +2! + 3! 3 / 3 Plus + 3! + 4! 4 / 4 plus 3! + 4! + 5! 5 / 5 Plus + (n + 1)! + (n + 2)! Sum of 1 / 1
10. To solve the equations: {2a-b = - 3,2b-a = 3 2a-b=-3 2b-a=3
11. 9 11 2 3 how to use addition and subtraction to divide four numbers is equal to 24
12. How do four numbers 1, 3, 5 and 9 equal to 24?
13. The sum of a two digit one digit number and a ten digit number is greater than 10. If 36 is added to the two digits, it is exactly equal to the two digits after the exchange of two digits Find the original two digits, using inequality solution
14. 123456789 each number can only be used once. After addition and subtraction, it is equal to 5,
15. Add appropriate budget symbols and brackets to the left of the equal sign of the following questions to make the calculation result exactly equal to the number on the right 3（）3（）3（）3= 5 3（）3（）3（）3= 6 3（）3（）3（）3= 7 3（）3（）3（）3=8 3（）3（）3（）3= 2 3（）3（）3（）3= 4
16. Add appropriate operation symbols and brackets to the left of the equal sign of the following questions to make the calculation result exactly equal to the number on the right 5-5-5-5=0 5○5○5○5=1 5○5○5○5=2 5○5○5○5=3 5○5○5○5=10 5○5○5○5=30 5×5×5×5=100 5○5○5○5=150 Wrong 5○5○5○5=0 5○5○5○5=1 5○5○5○5=2 5○5○5○5=3 5○5○5○5=10 5○5○5○5=30 5○5○5○5=100 5○5○5○5=150
17. Add appropriate operation symbols or brackets to the left of the equal sign of the following questions to make the result exactly equal to the number 4 = 20 on the right 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6=1996
18. 12 * 46 () is equal to 64 * 21 It's solved by equation.
19. 123456789 how to use addition and subtraction to make it equal to 100
20. 2.3.1 horizontal, vertical and oblique are equal to 8.1, and the numbers are not repeated