Question

m={[42×(6-40:10)+24]-8}:5

Answer 1

m = {[42*(6-4)+24]-8}:5

m =[(42*2+24)-8]:5

m = [(84+24)-8]:5

m = (108 - 8):5

m = 100 : 5

m = 20

Answer 2

m={ [42×(6-40:10)+24] -8 }:5=  

{ [42×(6-4)+24] -8 }:5=

[(42×2+24)-8]:5 =

[(84+24)-8]:5=

(108-8):5=

100:5=

20