145.8333
Step-by-step explanation:
We would proceed with the equation based on BODMAS rule
B= Braces(small>curly>big)
O=Of
D-Divide
M-Multiply and so on
0.9+{[3.25−(6 9/16 −0.025y)·0.6]÷0.75}÷6 2/3 =1.2
⇒0.9+{[3.25−(105/16 −0.025y)·0.6]÷0.75}÷ 20/3 =1.2
⇒0.9+{[3.25−3.9375+0.015y]÷0.75}÷ 20/3 =1.2
⇒0.9+{[-0.6875+0.015y]÷0.75}÷ 20/3 =1.2
⇒0.9+{-0.9167+0.02y}÷ 20/3 =1.2
⇒0.9-0.1375+.003y =1.2
⇒0.7625+.003y=1.2
⇒y=(1.2-.7625)/.003
∴y= 145.833