Question

Alguém poderia me ajudar ?​​

Answer 1

4/2=6/x

4x=12

x=12/4

x=3

6/4=5x-3/8

48=20x-12

20x-12=48

20x=48+12

20x=60

x=60/20

x=3

Answer 2

A)

AD / AB = AE / AC

4 / (4+2) = 6 / (6 + x)

4 / 6 = 6 / (6+x)

2 / 3 = 6 / (6+x)

2(6+x) = 3 × 6

12 + 2x = 18

2x = 18 - 12

2x = 6

x = 6 ÷ 2

x = 3

B)

AD / AB = AE / AC

6 / (6+4) = (5x-3)/(5x-3+8)

6 / 10 = (5x-3)/(5x + 5)

3 / 5 = (5x-3)/(5x+5)

5(5x-3) = 3 ( 5x + 5 )

25x - 15 = 15x + 15

25x - 15x = 15 + 15

10x = 30

x = 30 ÷ 10

x = 3

obs : 4/6 e 6/10 ambos foram simpli-

ficados por dois.

Dúvidas?comente.