<span>(40600-38956)*33-(15100-14125)*11=43527
1. 40600-38956=1644
2. 15100-14125=975
3. 1644*33=54252
4. 975*11=10725
5. 54252-10725=43527</span>
1998+3996001-1993= 3997999-1999=3996006
<span>2/3y - 1/3 = 5/9y
</span>2/3y- 5/9y = 1/3
(6/9-5/9)у=1/3
1/9 у=1/3
у=1/3 :1/9
у = 3
3/4y - 2/3 = 7/12
3/4y = 7/12 + 2/3
3/4у= 7/12+8/12
3/4у= 15/12
у=15/12:3/4
у= 5/3 = 1 2/3