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2014-05-21T21:22:00+03:00
A+B+C=180
A=B-16⇒B=A+16
C=2B⇒C=2(A+16)
A+A+16+2(A+16)=180
2A+16+2A+32=180
4A+48=180
4A=180-48
4A=132⇒A=33
B=33+16=49
C=2B=98
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