Question

a) 4:(4500:100+90:2-90)=

b)20x[5+10x(6+8:2)]:105=

c)1000735:5x[6-2x(4-1)]=

d)478954:[10-5x(4x7-2x3)]

Answer 1

a) 4:(4500:100+90:2-90)= 4:(45+45-90)= 4:0  imposibil
 
b)20x[5+10x(6+8:2)]:105=20x[5+10x(6+4)]:105=20x(5+10x10):105=
=20x105:105=20

c)1000735:5x[6-2x(4-1)]=200147x(6-2x3)=200147x0=0

d)478954:[10-5x(4x7-2x3)] =478954:[10-5x(28-6)] =478954:(10-5x22) =
=478954:(10-110) =478954:(-100) =-4789,54