Question

2. Which variable will eliminate? *
3x +6y=27
-3x+8y= 1

Answer 1

9x=27
x=3
———
-3*3+8y=1
5\4

Answer 2

the x variable

Explanation:

Given the 2 equations

3x + 6y = 27 → (1)

- 3x + 8y = 1 → (2)

Since the signs of the coefficients of x are opposite, then adding them will eliminate the x- term, that is

Add (1) and (2) term by term

0 + 14y = 28

14y = 28 ( divide both sides by 14 )

y = 2

Then substitute y = 2 into either equation for corresponding value of x