Question

tinh A = (  0,87 +6,4 ).(1,25.7 - 4/5.1,25)+31,64

Answer 1

A = (  0,87 +6,4 ).(1,25.7 - 4/5.1,25)+31,64

A= 7,2.7,75+31,64

A=55,8+31,64

A=87,44

Answer 2

(0,87 + 6,4) . (1,25 . 7 - 4/5 . 1,25) + 31,64

= 7,27 . (8,75 - 1) + 31,64

= 7,27 . 7,75 + 31,64

= 56,3425 + 31,64

= 87,9825

Answer 3

879825