Question

7.5 × 12 + 3 × 24.5 × 4 - 6 × 12 × 2

Answer 1

\(7,5\times12+3\times24,5\times4-6\times12\times2\)

\(=7,5\times12+\left(3\times4\right)\times24,5-\left(6\times2\right)\times12\)

\(=7,5\times12+12\times24,5-12\times12\)

\(=12\times\left(7,5+24,5-12\right)\)

\(=12\times20\)

\(=240\)

Answer 2

\(7,5\times12+3\times24,5\times4-6\times12\times2\)

\(=7,5\times12+12\times24,5-12\times12\)

\(=12\times\left(7,5+24,5-12\right)\)

\(=12\times20\)

\(=240\)