Question

{3+0,5•[2,3-0,2•(3,1-5,12:3,2)]}:4

Answer 1

{3+0,5•[2,3-0,2•(3,1-5,12:3,2)]}:4 =
={3+0,5•[2,3-0,2•(3,1-1,6)]}:4 =
=[3+0,5•(2,3-0,2•1,5)]:4 =
=[3+0,5•(2,3-0,3)]:4 =
=(3+0,5•2):4 =
=(3+1):4 =
=4:4=1

Answer 2

{3+0,5•[2,3-0,2•(3,1-5,12:3,2)]}:4=
(3,1-5,12:3,2)=3,1-1,6=1,5
5,12:3,2=51,2:32=1,6
[2,3-0,2•1,5]=2,3-0,3=2 0,2•1,5=0,3
{3+0,5•2}=3+1=4
0,5•2=1,0
4:4=1
R:1