Question

Thực Hiện phép tính :

a) A = -6.(-8+5-4)):3-7.|-2|.3

b)-4872-(375-4872)+300

Answer 1

\(-4872-\left(375-4872\right)+300\)

\(=-4872-375+4872+300\)

\(=-75\)

Answer 2

a) A = -6 . ( -8 + 5 - 4 ) : 3 - 7 . |-2| . 3

    A = -6 . ( -3 - 4 ) : 3 - 7 . 2 . 3

    A = -6 . ( -7 ) : 3 - 14 . 3

    A = 42 : 3 - 42

    A = 14 - 42

    A = -28

Vậy A = -28

b) -4872 - ( 375 - 4872) + 300

= -4872 - 375 + 4872 + 300

= ( -4872 + 4872 ) - ( 375 - 300 )

= 0 - 75

= -75