How to calculate the following problem, how simple and how to calculate It can't be written directly,

How to calculate the following problem, how simple and how to calculate It can't be written directly,

1 / 8 × 14 ÷ 7 / 8
=1/8x14x8/7
=1/8x16
=2
(4 / 5 + 3 / 10) △ 3 / 10
=4/5x10/3+3/10x10/3
=8/3+1
=11/3
3 / 4 ／ 15 / 16 ／ 5 / 6
=3/4x16/15x6/5
=4/5x6/5
=24/25
4 / 5 △ 7 / 4-3 / 7 × 4 / 5
=4/5x4/7-4/5x3/7
=4/5x(4/7-3/7)
=4/5x1/7
=4/35

(1 / 3 * 6 / 7-1 / 4) / 5 / 14 = (simple calculation)

(1 / 3 * 6 / 7-1 / 4) / 5 / 14
=2/7x14/5-1/4x14/5
=4/5-7/10
=8/10-7/10
=1/10

A simple calculation of dividing 69 of 87 and 80 by 1 of 2 and 5

69 of 87 and 80 divided by 1 of 2 and 5
=(88-11/80)×5/11
=88×5/11-11/80×5/11
=40-1/16
=39 and 15 / 16

Simple operation of 7 / 8 / 9 * 8 / 15

7 / 8 / 9 * 8 / 15
=7 out of 9 * 8 out of 5 * 8 out of 15
=7 / 9 × 64 / 3
=7 / 3 × 64
=448 out of 3

The reciprocal of true fraction must be greater than 1. The reciprocal of false fraction must be true fraction. 1 divided by a equals B and B must be reciprocal

The reciprocal of the true fraction must be greater than 1.. (right)
The reciprocal of a false fraction must be a true fraction
1 divided by a equals B and B must be reciprocal. (wrong) when a equals 0, the formula does not hold

If 7 / A is a false fraction and 8 / A is a true fraction, then a should be () A. greater than 7, B. equal to 7, C. less than 7

B

4 x minus 2 minus 6 2x minus 1 equals 1

Take 12 on both sides
3(x-2)-2(2x-1)=12
3x-6-4x+2=12
4x-3x=12+2-6
x=8

X minus ten sixths plus one equals two fourths plus one, and finally minus one
H urgent

x-(10x+1)/6=(2x+1)/4-1
24x-4(10x+1)=6(2x+1)-24
24x-40x-4=12x+6-24
28x=14
x=1/2

What is 2 / 3 times 6 / 7 plus 2 / 3 divided by 1 / 7

It turns out to be five and five out of 21

Ax three quarters = BX two fifths, a: B is written as the simplest integer ratio is (), the ratio is ()

8: Eight out of fifteen