Math, asked by manderekam, 1 year ago

by cross multiplication solve 3x +y =12 and x -3y =-6​

Answers

Answered by Alisha12344
0

Hello friend...

Here is your answer..

Answer:

x=3 and y=3

Step-by-step explanation:

3x + y -12= 0

x - 3y + 6= 0

           x                            y                          1

1                    -12                           3                       1

-3                    6                            1                       -3

Cross multiplying,we get

x/ 6-36 = y/ -12-18 = 1/ -9-1

x= -30/ -10

∴x=3

y= -30/ -10

∴y=3

Hope it is correct!

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