Question

2x+(1/2)y=7. 6x-(1/2)y=5 Solve the system without graphing. Show your reasoning.

Answer 1

adding the two equations, we have:

`\begin{gathered} 2x+(1)/(2)y=7 \\ 6x-(1)/(2)y=5 \\ \text{solution is: } \\ 8x=12\text{ then,} \\ x=(12)/(8) \\ x=(3)/(2) \end{gathered}`

we find y, by replacing the value of x in either equation