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afla nr.a,b,c stiind ,ca a:b=2 b:c=2 iar a-c=135
 


Răspuns :

|----|----|----|----|A
|----|----|B
|----|C  4sg-1sg=3sg   135:3=45 un sg si c
45x4=180 a   45x3=135 b


a=2b

b=2c

c=b/2

2b-b/2=135

4b/2-b/2=135

3b/2=135

3b=270

b=90

a=2*90=180

c=90/2=45

sper ca te-am ajutat