Question

90+7•[1614-12000:(18-10)]-16

b) 44+8•[280:(37-1480:20:37)]:32-7

c)(18•8+56):[50•40:(220-2•60)]

Answer 1

90+7*[1614-12000:(18-10)]-16=
=90+7*[1614-12000:8]-16
=90+7*[1614-1500]-16
=90+7*114-16
=90+798-16
=872


44+8*[280:(37-1480:20:37)]:32-7
=44+8*[280:(37-74:37)]:32-7
=44+8*[280:(37-2)]:32-7
=44+8*[280:35]:32-7
=44+8*8:32-7
=44+64:32-7
=44+2-7
=46-7
=39


(18*8+56):[50*40:(220-2*60)]
=(144+56):[50*40:(220-120)]
=200:[50*40:100]
=200:[2000:100]
=200:20
=10