Question

1//21y-1//3y-1//14=5//14

Answer 1

(1/21)•у-(1/3)•у-1/14=5/14
(1/21)•у-(7/21)•у=5/14+1/14
(-6/21)•у=6/14
У=6/14:(-6/21)=-6/14•21/6=(-6•21)/(14•6)=-3/2=-1 1/2=
-1,5