|-3,5|-|2,6|=? |20/21 |+ |-5/7 |=? |-2,1 |• |-3,7 |=? |-1/16 |: |-1 1/4 |=? СРОООЧНО!!!!!!!!!!!!
|-3,5|-|2,6|=0,9 |20/21 |+ |-5/7 |=5/3 |-2,1 |• |-3,7 |=7,77 |-1/16 |: |-1 1/4 |=1/44