Question

sendo x/y=5/19 e x+y=42 determine x e y

Answer 1

19x = 5y

x = 42 - y


19 (42 - y) = 5y

798 - 19y = 5y

798 = 24y

y = 33,25 ←

x = 42 - 33,25

x = 8,75 ←