Question

Solve using substitution please help!!!

Answer 1

The solution of the system is: A

Explanation:

`\left \{ {{12x-9y=30} \atop {6x+15y=54}} \right. \\\left \{ {{x=(30+9y)/(12) } \atop {6x+15y=54}} \right. \\\left\{ {{x=(30+9y)/(12)} \atop {6*(30+9y)/(12)+15y=54}} \right. \left \{ {{x=(30+9y)/(12)} \atop {15+(9)/(2)y+15y=54 }} \right. \\\left \{ {{x=(30+9y )/(12)} \atop {y((9)/(2)+15) )= 39}} \right. \\\left \{ {{x=4} \atop {y=2}} \right.`

Answer 2

I hope this helps you