Question

como resolver x+y=2. 4x-2y=5

Answer 1

x + y = 2

4x - 2y = 5

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x = 2 - y

4 * ( 2 - y) - 2y = 5

8 - 4y - 2y = 5

- 6y = 5 - 8

- 6y = - 3 (-1)

6y = 3

y = 3/6

y = 1/2
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4x - 2y = 5

4x - 2 * (1/2) = 5

4x - 2/2 = 5

4x - 1 = 5

4x = 6

x = 6/4

x = 3/2


Forte abraço!