Question

va rog repede urgent urgent​

Answer 1

Răspuns:

Explicație pas cu pas:

1,5 m = 150 cm

150 / 30 = 15/3 = 5

_______

4/13 = 12/39

_______

(x - 7)/6 = 9/2

x - 7 = 6*9/2 = 54/2 = 27

x = 27 + 7 = 34

________

a/b = 2/3

(a + 2b)/b = a/b + 2b/b = a/b + 2 = 2/3 + 2 = 2/3 + 6/3 = 8/3

________

21 : 7 = 3

5,1 : 3 = 1,7 l ulei