Question

Solve by cross multiplication method
3x +y - 12 =0
x - 3 y +6 =0

Answer 1

Answer:

Step-by-step explanation:

manjunpai2000

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Answer:

x = 3 ,y = 3

Step-by-step explanation:

3x+y -12 =0 ----(1)

From (1)

3x + y = 12

=>> y = 12-3x

x-3y +6 =0

=>> x -3(12-3x) + 6 =0

=>> x-36 +9x + 6 = 0

=>> 10x -30 =0

=>> 10x =30

x= 3

x-3y +6 =0

3-3y+6 = 0

9 -3y =0

-3y = -9

y = 3