Question

crie um problema para o sistema abaixo e em seguida resolva:
x+y = 5
x-y = 9

Answer 1

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$\tt{A~soma </p><p>~de~dois~n\acute{u}meros~\acute{e} \: 5}\\\tt{e ~a~diferenc_{\!\!,}a~entre~eles~\acute{e} \: 9}\\\tt{Quais~s\tilde{a}o~esses~n\acute{u}meros?}$

$+\underline{\begin{cases}\sf{x+y=5}\\\sf{x-y=9}\end{cases}}$

$\sf{2x=14}\\\sf{x=\dfrac{14}{2}}\\\huge\boxed{\boxed{\boxed{\boxed{\sf{x=7}}}}}\\\sf{x+y=5}\\\sf{7+y=5}\\\sf{y=5-7}\\\huge\boxed{\boxed{\boxed{\boxed{\sf{y=-2}}}}}$