Question

O valor de X nas proporções

Answer 1

Olá,

(x-2)/12 = x/20

20(x-2) = 12x

20x - 40 = 12x

20x - 12x = 40

8x = 40

x = 40/8

x = 5

Answer 2

x - 2/12 = x/20

(x - 2) • 20 = 12 • x

20x - 40 = 12x

20x - 12x = 40

8x = 40

x= 40/8

x= 5