Question

Tính:

(2502 - 756 + 15) - (79 + 115)

Answer 1

\(\left(2502-756+15\right)-\left(79+115\right)=1761-194=1567\)

Answer 2

\(\left(2502-756+15\right)-\left(79+115\right)=2502-756+15-79-115=2502-\left(756+79\right)+\left(-115+15\right)=2502-835+\left(-100\right)=2502-\left(835+100\right)=2502-935=1567\)