Q. If 3x + y = 19 , and x + 3y = 1.

Find the value of 2x + 2y

a) 10 b) 20 c) 5 d) 40

Adding both the equation , 3x+y+x+3y = 19+14x+4y = 20 22x+2y= 20 2x+2y = 10 

  • 12
What are you looking for?