Question

aflati x din urmatoarele proporti
a)xsupra3=12supra29
b)12suprax=16supra5
c)4supra9=xsupra27
d)5supra6=25suprax
e)2xsupra3=4supra9
f)2supra3x=4supra15
ajutati-ma va rog frumos o sa va ajut si eu

Answer 1

a) x/3 = 12/29

x = 3*12/29 = 36/29

b) 12/x = 16/5

x = 12*5/16 = 3*5/4 = 15/4

c) 4/9 = x/27

x = 4*27/9 = 4*3/1 = 12

d) 5/6 = 25/x

x= 6*25/5 = 6*5/1 = 30

e) 2x/3 = 4/9

2x = 3*4/9 = 1*4/3 = 4/3

x = 4/3 : 2 = 4/3 * 1/2 = 2/3 * 1/1 = 2/3

f) 2/3x = 4/15

3x = 2*15/4 = 1*15/2 = 15/2

x = 15/2 : 3 = 15/2 * 1/3 = 5/2 * 1/1 = 5/2