(1)(1.5!0.8)!0.5
=(4*1.5-3*0.8)!0.5
=3.6!0.5
=3.6*4-3*0.5
=14.4-1.5
=12.9
(2) y!(5!2)=46
y!(5*4-3*2)=46
y!(20-6)=46
y!14=46
4y-3*14=46
4y=88
y=22
(1)(1.5!0.8)!0.5
=(4*1.5-3*0.8)!0.5
=3.6!0.5
=3.6*4-3*0.5
=14.4-1.5
=12.9
(2) y!(5!2)=46
y!(5*4-3*2)=46
y!(20-6)=46
y!14=46
4y-3*14=46
4y=88
y=22