Question

Y=4-2X
5X-2Y=1

me ajudem?​

Answer 1

• Y = 4 - 2X

5X - 2Y = 1

5X - 2(4 - 2X) = 1

5X - 8 +4X = 1

9X = 1 + 8

9X = 9

X = 9/9

X = 1

Como Y = 4-2X

então Y = 4-2

Y = 2

Answer 2

y = 4 - 2x

2x + y = 4 (x2)

4x + 2y = 8

5x - 2y = 1

              +

-----------------------------

9x = 9

x = 1

y = 4 - 2(1)

y = 4 - 2

y = 2

S = {1, 2}

x = 1, y = 2