Question

50 - [( 50 - 2³ .5 ) : 2 + 3]

Answer 1

\(50-\left[\left(50-2^3.5\right):2+3\right]\)

\(=50-\left[\left(50-8.5\right):2+3\right]\)

\(=50-\left[10:2+3\right]\)

\(=50-8\)

\(=42\)

Answer 2

\(50-\left[\left(50-2^3.5\right):2+3\right]=50-\left[\left(50-8.5\right):2+3\right]=50-\left(10:2+3\right)=50-8=42\)