Question

Ex1 3xy egal 12


ex2 x supra y egal 3 supra 5

Answer 1

a. 3xy=12
⇒x·y=12/3
⇒x·y=4;
⇒x,y∈[[1,4],[2,2],[4,1];
b. x/y=3/5
⇒5x=3y;