Question

soluções de sistema 6x+y=5
-3x+2y=5
​

Answer 1

Resposta:

$S={(\frac{1}{3} ,3)}$

Explicação passo a passo:

$\left \{ {{6x+y=5} \atop {-3x+2y=5}} \right. \\\\y=5-6x\\\\-3x+2(5-6x)=5\\\\-3x+10-12x=5\\\\-15x=5-10\\\\-15x=-5\\\\15x=5\\\\x=\frac{5}{15}\\\\x=\frac{1}{3}$

$y=5-6x\\\\y=5-6.\frac{1}{3} \\\\y=5-2\\\\y=3$