Verified Answer :

y + 0.4 = 2 .....subtract 0.4 from both sides
y = 2 - 0.4
y = 1.6 <==

\(y+0.4=2\) 

\(y=2-0.4\) \((Combine \ like \ terms )\) = \(Subtract \ 0.4 \ from \ both \ sides\) 

\(y=1.6\) \(Simplify \ 2-0.4 \ to \ 1.6\)