Question

Решите подстановки систему уравнений: б) х-у-2=0 х +у-6=0; г) х-2у-3=0 5х+у-4=0; е)х+4у-2=0 3х+8у-2=0.

Answer 1

B) $\left \{ {{x=2+y} \atop {2+y+y=6}} \right. \left \{ {{x=2+y} \atop {2y=4}} \right. \left \{ {{x=2+y} \atop {y=2}} \right. \left \{ {{x=4} \atop {y=2}} \right.$

G) $\left \{ {{x=3+2y} \atop {15+10y+y=4}} \right. \left \{ {{x=3+2y} \atop {11y=-11}} \right. \left \{ {{x=3+2y} \atop {y=-1}} \right. \left \{ {{x=1} \atop {y=-1}} \right.$

E) $\left \{ {{x=2-4y} \atop {2-4y+8y}} \right. \left \{ {{x=2-4y} \atop {4y=0}} \right. \left \{ {{x=2-4y} \atop {y=0}} \right. \left \{ {{x=2} \atop {y=0}} \right.$