Question

X + Y = 9 X + 3Y = 23 RESOLVA O SISTEMA

Answer 1

olá !!!!

$x+y=9\\x+3y=23\\\\x=9\\x=23\\soma\\2x=32\\x=32/2\\x=16\\\\16+y=9\\y=9-16\\y=-7\\\\16+3y=23\\3y=23-16\\3y=7\\y=7/3\\y=2,3$

espero ter ajudado

Att: Jovem Lendário