1) (1,34+x)-58,3=4,261,34 + x=4,26+58,3
1,34 + x=62,56
x=62,56-1,34
x=61,22
2) (94,2-a)-1,26=3,254
94,2-a=3,254+1,26
94,2 - a=4,514
a=94,2-4,514
a=89,686
3) 4,75-(x-0,67)=3,025
x-0,67=4,75-3,025
x-0,67=1,725
x=1,725+0,67
x=2,395
4) 40,3-(63,4-a)=36,62
63,4 -a = 40,3 - 36,62
63,4 - a= 3,68
a=63,4-3,68
a=59,72