A)66y-4,5·(-8x+9y)= При x=3,1 и y=0

Question

A)66y-4,5·(-8x+9y)=
При x=3,1 и y=0

Answer 1

А) 66*0-4,5*(8*3,1+9*0)=? 0-4,5*(24,8+0)=? 0-4,5*24,8=? 0-111,6=? 0-111,6=-111.6

Answer 2

66у-4,5•(-8х+9у)=66у+36х-40,5у=25,5у+36х=25,5•0+36•3,1=111,6