Question

10-[ (8²-48).5+(23.10+8):28]

Answer 1

\(10-\left[\left(8^2-48\right)\cdot5+\left(23\cdot10+8\right):28\right]\)

\(=10-\left[\left(64-48\right)\cdot5+\left(230+8\right):28\right]\)

\(=10-\left(16\cdot5+238:28\right)\)

\(=10-\left(80+\dfrac{17}{2}\right)\)
\(=10-80-\dfrac{17}{2}\)

\(=-17-\dfrac{17}{2}\)

\(=-17-8,5\)

\(=-25,5\)