Question

{[(30+40)+(40-30)]x(20+10)}

Answer 1

{[(30+40)+(40-30)]x(20+10)}

{[70 + 10]x 30}

{80 x 30}

2400

Answer 2

Let's simplify the expression step by step:

First, let's simplify the inner parentheses:
(30 + 40) = 70
(40 - 30) = 10

The expression now becomes:
[(70) + (10)] x (20 + 10)

Next, let's simplify the addition within the parentheses:
(70) + (10) = 80
(20 + 10) = 30

The expression further simplifies to:
80 x 30

Finally, let's multiply:
80 x 30 = 2400

Therefore, the final result of the expression [(30+40)+(40-30)]x(20+10) is 2,400.

I hope this helps! :)