Question

Qual o valor de Y e X???

Answer 1

Resposta:

x=20 e y=30

Explicação passo-a-passo:

y+10º=2x=3x-20º

$\left \{ {y+10=2x} \atop {2x=3x-20}} \right. \\\left \{ {{y=2x-10} \atop {-x=-20}} \right. \left\\ \{ {{y=2x-10} \atop {x=20}} \right. \left \\\{ {{y=2(20)-10} \atop {x=20}} \right. \\\left \{ {{y=30} \atop {x=20}} \right.$