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problema 20 va rog mult dau coaroana

Problema 20 Va Rog Mult Dau Coaroana class=

Răspuns :

b+v=778
b-218=(v+218)-160 =>
v+218=b-218+160
v=b-218+160-218=b-58-218=b-(58+218)=b-276=>
b=v+276
v+276+v=778
2v=778-276=502
v=502:2=251
b=251+276=527
v=251
b=527