The sum of the reciprocal of 1 / 3 and the reciprocal of 2 is ()

five-fourths

RELATED INFORMATIONS

1. If la-1l + lab-2l = 0. Find 1 / AB + 1 / (a + 1) (B + 1) +... + 1 / (a + 2004) (B + 2004)
2. If | ab-2 | + (B-1) ^ 2 = 0 (1), find the value of A.B. (2) find the value of B ^ 2002 + (- b) ^ 2003 If | ab-2 | + (B-1) ^ 2 = 0 (1), find the value of A.B. (2) find the value of B ^ 2002 + (- b) ^ 2003? Another question: if | a + 3 | + (b-2) ^ 2 = 0, then A-B = note: "does ^" mean square?
3. If la-3l and LB + 2L are opposite to each other, find a + B + 5
4. LA-1 / 2L + LB-1 / 3L + LC-1 / 4L = 0, find the value of a + B + C
5. La-2l + lb-3l + lc-4l = 0, find the value of a + B + C
6. If LA + 2L + LB + 3L = 0, then 3A + 2B=
7. La and LB are complementary angles, and half of LB is 30 degrees smaller than LA. How many degrees are La and LB?
8. 1-2²+3²-4²+5²-6²+.+99²-100²
9. The factor of 30 is______ The factor of 36 is______ ．
10. The factors of 20 are 2,4,5,10,20 () Judge right or wrong
11. -|-The reciprocal of two thirds is ()
12. A and B are reciprocal to each other, a / B / 2 = ()
13. What's the result of the reciprocal of 4 / 9 plus 2 / 3 times 3 / 4?
14. When B is not equal to 0, the reciprocal of 1 / 4 times B is ()
15. A times b times C equals 1, so a, B, and C are reciprocal, right?
16. If M and N are reciprocal to each other, then M / 5 * n / 9=
17. B times the reciprocal of a number, the product is 4 and 2 / 3 It's due in a minute I don't want equation. I haven't learned that difficult equation yet. If there is no formula, please tell me the solution or analysis.
18. What is the product of the sum of 9 and its reciprocal multiplied by & nbsp; 79?
19. What is the difference between the reciprocal of a number and the product of this number and 15 / 7?
20. How to use letters to represent two digits or more