SOLUTION: For homework, Randall is solving the system of linear equations in the box. 3x + 4y = 25 4x - 7y = - 16 Which strategy should Randall use to solve this system of equations?

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: For homework, Randall is solving the system of linear equations in the box. 3x + 4y = 25 4x - 7y = - 16 Which strategy should Randall use to solve this system of equations?      Log On


   

Question 1209542: For homework, Randall is solving the system of linear equations in the box. 3x + 4y = 25 4x - 7y = - 16 Which strategy should Randall use to solve this system of equations?
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
Which strategy depends on what he knows. Upon appearance, substitution seems not the best choice but it can work.

system%283x%2B4y=25%2C4x-7y=-16%29

Elimination Method:
system%2812x%2B16y=200%2C12x-21y=-48%29

system%2812x%2B16y=200%2C-12x%2B21y=48%29
ADD:
37y=248
y=248%2F37
y=6%2626%2F37
But recheck this part in case of mistakes in the work.