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afla difenta b-c daca ab -ac -48=2si a =10

Răspuns :

a(b-c)-48=2
a=10
10(b-c)-48=2
10(b-c)=2+48
b-c=50 supra 10
b-c=5
ab-ac-48=2
ab-ac=48+2
a(b-c)=50
10•(b-c)=50
b-c=50÷10
b-c=5