Question

qual a solução da equação 2x+y=2

Answer 1

$\left \{ {{2x+y=2} \atop {y=2-2x}} \right. \left \{ {{2x-2x=2-2} \atop {y=2-2x}} \right. \left \{ {{x=0} \atop {y=2-2x}} \right. \left \{ {{x=0} \atop {y=2-2(0)}} \right. \left \{ {{x=0} \atop {y=2}} \right. \\\\2x+y=2\\2(0)+2=2\\       2=2$