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a:b=2,b:c=2,a-c=135 ajutor va rog eu mult

Răspuns :

c/.../
b/.../.../
a/.../.../.../.../
a=4c
4c-c=3c
3c=135
c=135:3=45
b=45x2=90
a=90x2=180

verificare
180:90=2

90:45=2

180-45=135
a=2b. b=2c. c=b:2=135. 4b:2-b=135. 3b:2=135. 3b=270. b=90. a=2*90=180 c=90:2=45. Sper ca te-am ajutat'