Question

Answer 1

 

(3,07 + 7,005) - (23,005 - 5,23)

=3,07 + 7,005-23,005+5,23

=[3,07 +5,23]+[7,005-23,005]

=3,3+-16=-12,7

Answer 2

\(d,\left(3,07+7,005\right)-\left(23,005-5,23\right)\)

\(=3,07+7,005-23,005+5,23\)

\(=\left(3,07+5,23\right)+\left(7,005-23,005\right)\)

\(=8,30+\left(-16\right)\)

\(=-7,7\)