Question

resolva os sistemas
X-y = 1
x+y=9​

Answer 1

olá !!!

$x-y=1\\x+y=9\\\\x=1\\x=9\\soma\\2x=10\\x=10/2\\x=5\\\\x-y=1\\-y=1-5\\-y=-4\\\huje{\boxed{\sf y=4 }}\\\\x+y=9\\y=9-5\\\huge{\boxed{\sf y=4}}\\\\\huge{\boxed{\boxed{\boxed{\boxed{\boxed{\sf x=5 \ e \ y = 4 }}}}}$

espero ter ajudado

Att: Jovem Lendário