Question

0.8*3.9+0.8*4.1-2=
0.9*1.3+0.9*3.7-2=
1.8*2.4-1.8*4.4+1=
2х-(3х+у)+2(у+1)+х=

Answer 1

1) 4.4
2)2.5
3)-2.6
4)у+2

Answer 2

а решение