Question

Tính hợp lý

29.(79-34)-79.(29+34)

Answer 1

  \(29.\left(79-34\right)-79.\left(29+34\right)\)

\(=29.79-29.34-79.29-79.34\)

\(=0-34.\left(29+79\right)\)

\(=0-34.108\)

\(=0-3672\)

\(=-3672\)

Answer 2

\(29.\left(79-34\right)-79.\left(29+34\right)\)

\(=29.79-29.34-79.29-79.34\)

\(=\left(29.79-79.29\right)-34.\left(29+79\right)\)

\(=0-34.108\)

\(=0-3672\)

\(=-3672\)