Question

solve the following equation by elimination method: x-3y-7=0 , 3x-3y-15=0​

Answer 1

Step-by-step explanation:

On subtracting eq i from ii

3x - 3y - 15 = 0

x - 3y - 7 = 0

- + +

=> 2x -8=0

x = 4

on putting x = 4 in eq i we get

4 - 3y -7 =0

- 3y = 3

y = - 1

Answer 2

Step-by-step explanation:

x-3y=7.............1

3x-3y =15..........2

x-3y= 7

x-y=5

-2y= 2

y= -1

x-3*-1=7

x+3=7

x=4 answer