Question

Solve the system of equation?
2x - 4y = 10
7x - y = 12​

Answer 1

x = 1.153846153846154

y = -1.923076923076923

Explanation:

Multiply 7x - y = 12 by -4 and then add it to 2x - 4y = 10

2x - 4y = 10

+(-4( 7x - y = 12))

-26x = -30

`(-26x)/(-26) = (-30)/(-26)`

x = 1.153846153846154

Then plug in x to get y.

2(1.153846153846154) - 4y = 10

2.307692307692308 - 4y = 10

-2.307692307692308 -2.307692307692308

-4y = 7.692307692307692

`(-4y)/(-4) = (7.692307692307692)/(-4)`

y = -1.923076923076923