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Crsteadelin
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(a+b+c)÷3=250
b-12=a
b:c=3 rest 5
a , b , c ?​

Răspuns :

Camysweety2011

(a+b+c)÷3=250

b=a-12

b÷c=3 rest 5 -> b=3c+5 =>c=(b-5)÷3 -> c=(a-17)÷3

a+b+c=250*3

a+b+c=750

a+a-12+c=750

2a+c=762

2a+(a-17)÷3=762

6a+a-17=2286

7a=2303

a=329

b=a-12=329-12=317

c=(a-17)÷3=(329-17)÷3=312÷3=104

(329+317+104)÷3=250

750÷3=250

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