2. Using the substitution method, Jose is solving the following system of equations
Algebraically
A y = 3x + 4
B. 2x – 3y =- 21
Which equivalent equation could Jose use?
1) 2(-3x – 4) + 3x =- 21
2) 2(3x – 4) + 3x = 21
3) 2x - 3(- 3x – 4) =- 21
4) 2x - 3(3x + 4) =- 21