Question

[Giang Lê]

a)2200:{320:[88-(72-16x4)]}

b) 112882:{22x[743-(2009-1999)]}

Answer 1

[Thuỳ Dương]

a)2200:{320:[88-(72-16x4)]}

=2200:{320:[88-(72-64)]}

=2200:{320:[88-8]}

=2200:{320:80}

=2200:4

=550