Question

metodo substituicao{x+y=22
x=y+5
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2

Answer 1

$\left \{ {{x+y=22} \atop{x= \frac{y+5}{2} }} \right. \\ \\ substituindo \\ 2 \\ em \\ 1 \\ \\ \\ \frac{y+5}{2}+y=22 \\ \\ \frac{y+5+2y=44}{2} \\ \\ 3y=39 \\ y=13 \\ \\ x= \frac{13+5}{2} \\ x=9$