Question

2•(0,6у+1,85)-0,7=1,3у

Answer 1

2*(0.6у+1.85)-0.7=1.3у
1.2у+3.7-0.7=1.3у
1.2у-1.3у=0.7-3.7
-0.1у= -3               -3/-0.1= 30
у=30