Question

mă ajuta cineva la acest exercițiu? dau coroana ​

Answer 1

Răspuns:

Explicație pas cu pas:

a)

x/3 = 5/6

x = 3*5/6 = 5/2

b)

2/x = 4/3

x = 2*3/4 = 3/2

c)

5/3 = x/6

x = 6*5/3 = 10

d)

6/5 = 9/x

x = 5*9/6 = 15/2

e)

(x + 2)/3 = 7/6

6(x + 2) = 3*7

6x + 12 = 21

6x = 21 - 12 = 9

x = 9/6 = 3/2

f)

5/(x - 1) = 4/3

5*3 = 4(x - 1)

4x - 4 = 15

4x = 15 + 4 = 19

x = 19/4

g)

2/7 = 3x/4

2*4 = 7*3x

8 = 21x

x = 8/21

h)

8/9 = 16/3x

8*3x = 9*16

24x = 144

x = 144/24 = 6