A variable needs to be eliminated to solve the system of equations below. Choose the correct first step.
minus, 9, x, minus, 7, y, equals, 24
−9x−7y=
24
9, x, minus, y, equals, minus, 48
9x−y=
−48
Answer
Multiple Choice Answers
S, u, b, t, r, a, c, t, to eliminate , y, .Subtract to eliminate y.
S, u, b, t, r, a, c, t, to eliminate , x, .Subtract to eliminate x.
A, d, d, to eliminate , y, .Add to eliminate y.
A, d, d, to eliminate , x, .Add to eliminate x.
The first step to eliminate a variable in this system of equations is to subtract one equation from the other. Therefore, the correct answer is:
Subtract to eliminate y.