Question

thuc hien phep tinh

0,75*6,4+3,6*0,75(-8,5)

Ai nhanh va dung minh se tich cho 

Answer 1

\(0,75.6,4+3,6.0,75.\left(-8,5\right)\)

\(=0,75.\left(6,4+3,6.\left(-8,5\right)\right)\)

\(=0,75.\left(6,4-30,6\right)\)

\(=0,75.\left(-24,2\right)\)

\(=-18,15\)

Answer 2

         0.75*6.4+3.6*0.75*(-8.5)

= 0.75*(6.4+3.6)*(-8.5)

= 0.75*10*(-8.5)

= 7.5*(-8.5)

= -63.75

Answer 3

=0,75*6,4+(-30,6)*0,75

=0,75[6,4(-30,6)]

=0,75*(-24,2)

=-18,15