Write two division formulas according to the formula that half is good and one third is equal to one sixth

Write two division formulas according to the formula that half is good and one third is equal to one sixth

One sixth divided by one third is half

If ABC is greater than 0 and 5 / 7 A = 7 / 5 B = 1 / 2 C, try to judge the size of ABC

50A = 98b = 35C, so c > a > b

One sixth plus two fifths x = five sixths

1/6+2/5x=5/6
2/5x=4/6
X = five thirds
Can I save one

X / two fifths / three fourths = five eighths

X / two fifths / three fourths = five eighths
x=5/8*2/5*3/4
x=3/16

What's the quotient of the difference between 30 and 25, excluding their product

3158

30 minus 6.5 times 2.2, what's the quotient of the difference divided by 4.71

Algorithm
6.5 * 2.2 calculate 65 * 22 first, and then move 2 decimal places
65 * 22 oral calculation: 65 * 11 * 2 times 11 is 65 dislocation plus 65 = 715, 2 times 1430
Move the decimal and subtract by 15.7
Division is solved by fractions, either by division or division

Use a simple method to calculate the following questions 1.3 / 4 + 1 / 2 △ 4 / 5 + 3 / 8 2.9/13 △ 7 + 1 / 7 × 5 / 13 3.3-3 / 2 × 10 / 21-2 / 7

1.3/4+1/2÷4/5+3/8
=3/4+1/2*5/4+3/8
=3/4+5/8+3/8
=3/4+（5/8+3/8）
=3/4+1
=7/4
2.9/13÷7+1/7×5/13
=9/13*1/7+1/7×5/13
=1/7*（9/13+5/13）
=1/7*14/13
=2/13
3.3-3/2×10/21-2/7
=3-5/7-2/7
=3-（5/7+2/7）
=3-1
=2

Simple calculation method of 21 × (9.3-2.4) + 6.9

21×（9.3-2.4）+6.9=21×6.9+6.9=20×6.9+2×6.9=138+13.8=151.8

Class 6 (1) and class 6 (2) held a basketball match. Class 6 (1) got 48 points, one seventh less than Class 6 (2). How many points did class 6 (2) get?
Write the quantity relation

Class 6 (1) and class 6 (2) held a basketball match. Class 6 (1) got 48 points, one seventh less than Class 6 (2). How many points did class 6 (2) get?
Quantity relation: grade of class 62 - 1 / 7 of grade of class 62 = grade of class 61
It can be said that:
48÷（1-1/7）
=48÷6/7
=56 points
A: slightly

6 / 5 * (2.25 + 4 and 1 / 6) / 77%
Quick, super urgent!

6 / 5 * (2.25 + 4 and 1 / 6) / 77%
=6 / 5 * 77 / 12 / 77%
=7.7/77%
=10