(x*y) / (1,4x*0,3y) упростить!
(ху)/(1,4х*0,3у)=ху/0,42ху=100/42=2 16/42=2 8/21
( ху ) / ( 1,4х • 0,3у ) = 1 / ( 1,4 • 0,3 ) = 1 / 0,42 = 1 : 21/50 = 50/21 = 2 8/21