Question

Which of these strategies would

eliminate a variable in the system of
equations?
6x + 5y =1
6x – 5y = 7

Answer 1

Add the both equations the variable y will be eliminated.

Solution :

6x+ 5y + 6x - 5y = 1 + 7

12x = 8

x = 2/3

Putting Value of x in equation 1 we get

y = -3/5

Answer 2

Answer: it’s “add the equations” and “subtract the bottom equation from the top equation”