Question

sistema de equações2x 4y = 34x -8y=2

Answer 1

2x + 4y = 3
 4x -8y = 2(;2)

2x + 4y = 3
2x  - 4y = 1
        4x = 4 ==> x = 1
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2x + 4y = 3 ==> 4y = 3 - 2x ==> 4y = 3 - 2.1

 4y = 3-1 ==> 4y = 2 ==> y = 2/4