Question

840÷21×2-4 of 20+237-81÷27

Answer 1

Step-by-step explanation:

840÷21×2-4 of 20+237-81÷27

=. 840÷21×2-80+237-81÷27

=. 40×2-80+237-3

=. 80-80+237-3

=. 80+237-80-3

=. 317-80-3

=. 317-83. [ because (-)(-)=(+) ]

=. 234. Ans.

BY 'BODMAS' METHOD