Question

Solve the equation by elimination
methodli-
3x+ 4y
=-6

3x -y =9
​

Answer 1

Answer:

3x+4y=-6 -1

3x-y=9 -2

subtracting equation (1) from (2)

5y=-15

y=-3

put the value of y in equation 1

3x+4(-3)=-6

3x-12 =-6

3x =-6+12

3x = 6

x =2

x=2,y=-3