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