1)(1,34+x)-58,3=4,26

1,33+x-58,3=4,26

x=4,26-1,33+58,3

x=61,23

2)(94,2-a)-1,26=3,254

94,2-a-1,26=3,254

-a=3.254-94,2+1,26

-a=-89,686

а=89,686