MATH SOLVE

3 months ago

Q:
# Determine the best method to solve the system of equations. Then solve the system.7x-2y=8 5x+2y=4

Accepted Solution

A:

Answer:x=1 y = -1/2(1,-1/2)Step-by-step explanation:7x-2y=8 5x+2y=4I would use elimination since we have 2y in one equation and -2y in the other7x-2y=8 5x+2y=4--------------------12x = 12Divide each side by 1212x/12 = 12/12x =1The substitute back into equation 25(1) +2y = 45 +2y = 4Subtract 55-5+2y = 4-52y = -1Divide by 22y/2 = -1/2y = -1/2