1. x-1/3 +2=1 1/4
×-1/3+2=1×4+1/4
x-1/3+2=5/4 => 5:4=1,25
x-1/3+2=1,25
x=1/3+2+1,25
×=1/3+2/1+1,25
x=1+6/3+1,25
x=7/3+1,25
x=2,(3)×1,25
×=2,91(6)
2.
a)-1,3×-2,2=-3,5
b) idk
3. idk