Question

Solve the system of equations ​

Answer 1

x = -2 and y = -21

Explanation:

Given equations are :

`y=15x+9\ .....(1)\\\\y=(x)/(2)-20\ ....(2)`

From equation (1) and (2)

`15x+9=(x)/(2)-20\\\\15x-(x)/(2)=-20-9\\\\(29x)/(2)=-29\\\\x=-2`

Put the value of x in equation (1)

y = 15(-2) + 9

= -30 + 9

y = -21

So, the solution of the equations are (-2,-21).