Question

The expected value of each expression is given with it. Insert brackets in the expression so as to get the expected value.

(6) 30 – 10 – 10 (value 30)

Answer 1

To get the value 30, we have to place the brackets as follows:
30 – (10 – 10)

It can be solved as:
30 – 0 (Solving simple brackets first)
= 30