Question

упростите до конца

4/9 *(2.7m-2.1/4n)-4.2(5/7m-0.5n)=1.2m-1n-3m+2.1n=........

Answer 1

= -1.8m+1.1n   ......................                                           .

Answer 2

 

1.2-1n-3v+2.1=1,8m+1.1n