Question

me ajudem (teorema de tales)

Answer 1

  8    =   12
X+1     2x-6

12X+12 = 16X - 48

4X= 60

X=15

Answer 2

8 ----------------------------------------- 12

x + 1 --------------------------------------- 2x - 6

12( x + 1 ) = 8 ( 2x - 6 )
12x + 12 = 16x - 48
12x - 16x = - 48 - 12
- 4x = - 60 ( inverter os sinais )
4x = 60
x = 60 / 4
x = 15