Question

по действиям 1) решение и ответ 2)

Answer 1

21,71+4,06.У=27,8
27,8-21,71=6,09
6,09:4,06=1,5


2
12-11,36=0,64
20,8:0,64=32,5
8:12,5=0,64
32,5-0,64=31,86

Answer 2

21.71+4.06у=27.8
4.06у=27.8-21.71
4.06у=6.09
у=6.09/4.06
у=1.5

20.8:(12-11.36)-8:12.5=31.86
12-11.36=0.64
20.8:0.64=32.5
8:12.5=0.64
32.5-0.64=31,86