Question

Срочноооо решите!!!!!

Answer 1

-4х+9х=5х;
5х*(-1 1/5) =-6

Answer 2

-4х+9х=5х=5*(-1 1/5)=5*(-6/5)=-6

2х-8х=-6х=-6*(-1 1/6)=6*(7/6)=7