Division, removing brackets and moving items 8=10000/（1000+x）/2 How can I move this term to get x? Step by step

Division, removing brackets and moving items 8=10000/（1000+x）/2 How can I move this term to get x? Step by step

The division formula is calculated from left to right. In order to make you understand it better, I add a bracket to the original formula and change the position from left to right
[10000 ÷ (1000 + x)] 2 = 8, with this bracket is the same as without it, but at this time, it is obvious that the last step on the left of the equal sign is "2",
Therefore, the term "2" is moved to "× 2":
10000÷（1000+X）＝8×2
Now the last step on the left side of the equal sign is "△ (1000 + x)". Because x is here, it's better to change the position of (1000 + x) and (8 × 2)
10000÷（8×2）＝1000+X
It's like 6 / 2 = 3 can be written as 6 / 3 = 2. Don't forget to bracket 8 × 2
Finally, move the 1000 in the "1000 + X" on the right back, here it is additive, so move it to decrease
10000÷（8×2）－1000＝X
10000÷16－1000＝X
625－1000＝X
X＝－375

Add brackets to 90-36 + 48 △ 6 as required. (1) divide first, then add, and finally subtract. (2) subtract first, then add, and finally divide

（1）90-[36+（48÷6）]
（2）[(90-36)+48]÷6

Why do I change the sign when I open the bracket in a division expression

You're wrong. Open parenthesis in division
The minus sign is in front of the bracket. If you remove the bracket, you need to change the sign. This is the principle

How to remove brackets when multiplication or division is in front of brackets

For example, if 5 * (- 3) = - 15 contains multiple items, it should be multiplied separately. 7 * (- x + 2) = - 7x + 14. But the division rule is not issued, it can only be regarded as a whole

1 / 8 + 1 / 24 + 1 / 48 + 1 / 120, simple algorithm, fast

1/8+1/24+1/48+1/120
=（30+10+5+2）/240
=47/240

How to calculate 1 / 2 + 1 / 6 + 1 / 12 + 1 / 20 + 1 / 30

Original formula = 1 / 2 + 1 / 2-1 / 3 + 1 / 3-1 / 4 + 1 / 4-1 / 5 + 1 / 5-1 / 6
=1/2+1/2-1/6
=5/6

848 divided by 8 and 52 multiplied by 8
Simple operation!

I don't know if there are brackets?
It's 848 / 8 + 52 * 8 = 16 + 52 * 8
Put forward a common factor 8 = 8 * (2 + 52) = 8 * 54 = 432
Come on, make progress every day

1 / 2 + 1 / 6 + 1 / 12 + 1 / 20 + 9900 (simple calculation)
Tip: find a way to make each score into the form of subtracting two scores

1-1/9900=9899/9900

4 / 5 times 47 plus 52 divided by 5 / 4 plus 4 / 5

=4/5×47+52×4/5+4/5
=4/5×（47+52+1）
=4/5×100
=80

1 / 2 + 1 / 6 + 1 / 12 + 1 / 20 + How about 1 out of 9900?

1 / 2 + 1 / 6 + 1 / 12 + 1 / 20 + one-9900th
=1/1×2+1/2×3+1/3×4+1/4×5+.1/99×100
=1-1/2+1/2-1/3+1/3-1/4+.+1/99-1/100
=1-1/100
=99/100
ninety-nine-100ths