Question

Which of the following would be the best first step to solve the system of equations? 2x – 9y = 6 4x – 3y = –7

Answer 1

combine like terms ex.\[62x+6y=-7\]

Answer 2

Pair of linear equations in 2 variables.
1. Find the value of one variable in terms of the other.
2x=6+9y
x=(6+9y)/2
2. Substitute the obtained value in the second equation.

4(6+9y)/2-3y=-7

3. Find y and then, x.