Question

{900-6×[176:4-(17×2+132:22)]×(400-15×25)}:60

Answer 1

{900-6X[44-(34+6)]X(400-375)}:60=
{900-6X[44-40]X25}:60=
{900-6X4X25}:60=
{900-600}:60=
300:60=5

Answer 2

{900-6×[176:4-(17×2+132:22)]×(400-15×25)}:60=
={900-6×[44-(34+6)]×(400-375)}÷60
={900-6×[(44-40)×25]}÷60
= (900-6×4×25)÷60
=(900-24×25)÷60
=(900-600)÷60
=300÷60
=50