Answer:
2.5
Step-by-step explanation:
l x+y=3
ll x*y=1.25
l x=3-y
ll (3-y)*y =1.25
ll -y^2+3y-1.25=0
ll y^2-3y+1.25=0
a=1
b= -3
c=1.25
y1, 2 =(3+/-sqrt(9-4*1.25))/2
y1, 2 = (3+/-2)/2
y1=1.25 =>x=3-2.5=0.5
y2=0.5=> x=3-0.5=2.5
the numbers: o.5, 2.5
