Question

tính thuận tiện

Answer 1

\(c.\left[461+\left(-78\right)+40\right]+\left(-461\right)=461-78+40-461=\left(461-461\right)+\left(-78+40\right)=-38.\)

\(d.\left(53-76\right)-\left[-76-\left(-53\right)\right]=53-76+76-53=0.\)