You need to solve a system of equations. You decide to use the elimination
method. Which of these is not allowed?
3x - 2y = 7
Equation 1
3x + 4y = 17
Equation 2
A. Subtract equation 2 from equation 1.
B. Multiply equation 1 by 2. Then add the new equation to equation 2.
C. Subtract the left side of equation 2 from the left side of equation
1.