Question

qual o valor de x?
X +Y= 49
X - Y= 28​

Answer 1

jekskakkskdkksskkskskksksld

Answer 2

$+\underline{\begin{cases}\mathsf{x+y=49}\\\mathsf{x-y=28}\end{cases}}$

$\mathsf{2x=77}\\\large\boxed{\boxed{\boxed{\boxed{\mathsf{x=\dfrac{77}{2}}}}}}$