Q:

Solve the system of equation?2x - 4y = 107x - y = 12​

Accepted Solution

A:
Answer:x = 1.153846153846154y = -1.923076923076923Step-by-step explanation:Multiply 7x - y = 12 by -4 and then add it to 2x - 4y = 10        2x - 4y = 10+(-4( 7x - y = 12))      -26x = -30      [tex]\frac{-26x}{-26} = \frac{-30}{-26}[/tex]     x = 1.153846153846154Then plug in x to get y.   2(1.153846153846154) - 4y = 10       2.307692307692308 - 4y = 10      -2.307692307692308          -2.307692307692308                  -4y = 7.692307692307692                  [tex]\frac{-4y}{-4} = \frac{7.692307692307692}{-4}[/tex]                  y = -1.923076923076923