(question 1) 3x / 4 + 1 / 2 = 45 times 1 / 3 (question 2) 0.6:35% = 1 / 5: X

Question 1: x = 12 question 2: x = 7 / 60

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1. 3x / 2 + 1 = 7 / 6 + X
2. The ratio of 2:2:1.5 is (). If the first term is multiplied by 8, the ratio will remain unchanged and the second term will become ()
3. 8.6*2.7+62*14%+35*0.86 121+27+121*60+121*16+79*91+12*79 8.6*2.7+62*14%+35*0.86 121+27+121*60+121*16+79*91+12*79 It's a simple calculation
4. 12 and 1 / 3 of 3 / 4 of 3 / 14 of 5 / 16 of 7 * 2 and 2 / 3 + 1 / 7 = how much
5. 5 / 7 + 2 / 7, 1 / 6 + 1 / 6, 4 / 11-4 / 11, 3 / 14 + 5 / 14, 9 / 16-5 / 16 6 / 17 + 3 / 17, 15 / 13-5 / 13
6. How many times of 27 is 35? How many times of 35 is 21? This is our fifth grade paper. The answer can be scores or numbers,
7. Simple calculation of Grade Five score: 1 / (10 * 12) + 1 / (12 * 14) + 1 / (14 * 16) + 1 / (16 * 18)
8. 12,2,2,3,14,2,7,1,18,1,2,3,40,10,(),4 A．4B．2C．3D．1
9. 212×14+214×16+216×18+218×20+120．
10. What is 4 divided by 8 / 3 divided by 1 / 6?
11. How to solve the problem of 5.1 × 3x + 5 × 3 = 41?
12. 99 and 21 / 22 times 22 =?
13. 6 judgment questions Non zero natural numbers are either prime numbers or composite numbers A circle with a radius of 2 cm has the same perimeter and area When the diameter of the wheel is fixed, the distance traveled is directly proportional to the number of wheel revolutions 3 / 8 of the numerator plus 6, in order to keep the size of the fraction unchanged, the denominator should be expanded to 6 times the original Add 0 to the end of the decimal or remove 0, the size of the decimal remains unchanged Two cylinders have the same volume and the same surface area
14. All natural numbers above 2 can be decomposed into prime factors? (judgment question) explain the reason!
15. 99.30.28.46.54 how to decompose the mass factor
16. What is the decomposition quality factor of 12? Is there a standard definition?
17. What is the factorization quality factor
18. (- 5 1 / 3) times (+ 1 7 / 8) times (- 2 1 / 5) Multiplication of rational numbers,
19. 8.5 times 3 / 4 plus 3 / 4 times 5 is like 6.5 times 3 / 4
20. 3.78 is made up of three parts______ , 7______ And eight______ It's made up of