Question

Qual o valor de x e y (2x-5)=(8,y)

Answer 1

y = 2x + 8

x = y - 5

x = (2x + 8) -5

x = 2x + 8 - 5

x = 2x + 3

x - 2x = 3

-x = 3

x = -3

y = 2x + 8

y = 2 (-3) + 8

y = -6 + 8

y = 2