Question

quanto e 3x-y=5 e o par ordenado

Answer 1

3x-y=5

3x+5+y

x=5+y/3

substituindo x-5+y/3

5-(5+y13)-y=5

15+3y/3=5

15+3y/=5-3

15+3y=15

3y=15-15

3y=0

y=0

substituindo y=0

x=5+y13

x=5+0/3

x=5/3