Tolong dijawab secepatnya ya!!!

Tolong dijawab secepatnya ya!!!

$11.2 = frac{112}{10} \$
$frac{112}{10} - (2 frac{1}{4} + 3 frac{2}{5} +( 2 times 1.75))$
112/10-(9/4+17/5+(3,5))
=112/10-(45/20+68/20+70/20)
=112/10-(183/20)
=224/20-183/20
=41/20
=2 1/20
jawaban A