Question

( x-7/4)×2/3=0 ; 12 (x-13/10×5/6)=0;

9 (x-7/2×4/7)=0

Answer 1

1. ( x-7/4)×2/3=0

( x-7/4)×2/3=0

x-7/4=0

x=7/4

Answer 2

вообще не понятно