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Onofrei20adelin1
a fost răspuns

a+b+c=1575
a=2(b+c)
c=75+b
a=?
b=?
c=?

Răspuns :

Dinulicaalbert
a+b+c = 1575
a=2(b+c) => a = 2b+2c
c=75+b

2b+2c+b+c = 1575 => 3b+3c=1575
3b+ 3(75+b)=1575 => 6b+225=1575
6b=1575-225 => 6b=1350
b = 1350/6 => b= 225
c=75+225 => c=300
a=2(225+300) => a=2*525
a = 1050

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