Răspuns :
A=90GRADE
B+C+D+A=360GRADE REGULA PTR DIRECT PROP ESTE B/5=C/6/D/7=K rezulta B=5K,C=6K, D=7K 90+5K+6K+7K=360 18K=270 K=15GRADE REZULTA B=5·15 ADICA 75GRADE C=6·15 ADICA 90 GRADE D=7·15 ADICA 105 GRADE
B+C+D+A=360GRADE REGULA PTR DIRECT PROP ESTE B/5=C/6/D/7=K rezulta B=5K,C=6K, D=7K 90+5K+6K+7K=360 18K=270 K=15GRADE REZULTA B=5·15 ADICA 75GRADE C=6·15 ADICA 90 GRADE D=7·15 ADICA 105 GRADE
Am facuto ora trecuta la matematica
A=90•
B supra 5 = k=> B= 5k=15x5=75
c supra 6=k=>C=6k=15x6=90
d supra 7=k=> D=7k=15x7=105
90+5k+6k+7k=360•
18k=250
k=250:18=15
Scrie asa ca e binee ;)
A=90•
B supra 5 = k=> B= 5k=15x5=75
c supra 6=k=>C=6k=15x6=90
d supra 7=k=> D=7k=15x7=105
90+5k+6k+7k=360•
18k=250
k=250:18=15
Scrie asa ca e binee ;)