Question

Resolva os seguinte sistema pelo metodo da adição
2x+y=3
x+y=2

Answer 1

$\large\bm{\begin{cases}2x + y = 3 \\ x + y = 2\end{cases}} \\\\ \large\bm{\begin{cases}2x + y = 3 \\ y = 2 - x\end{cases}} \\\\ \large\bm{2x + 2 - x = 3} \\\\ \large\bm{x = 1} \\\\ \large\bm{y = 2 - 1} \\\\ \large\bm{y = 1} \\\\ \large\bm{\left(x,y\right) = \left(1,1\right)} \\\\ \large\bm{\begin{cases}2x + 1 = 3 \\ 1 + 1 = 2\end{cases}} \\\\ \large\bm{\begin{cases}3 = 3 \\ 2 = 2\end{cases}} \\\\ \bm{\large\boxed{\boxed{  { \large \bm{ \left(x,y\right) = \left(1,1\right)}}}}}$

${\large\boxed{\boxed{  { \large \bm{ Bons~Estudos} }}}}$