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afla nr a.b si c stiind ca A;B =B;C iar A-C=135





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Răspuns :

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