Question

x+x*4,5/3+x*7/2=255

Answer 1

bằng 27,5 

tích nha

Answer 2

x+x.4,5/3+x.7/2=255

x.(1+4,5/3+7/2)=255

x.6=255

x=255:6

x=42,5

Vậy x=42,5