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Stiind ca X= 14 , calculati a+b:
30 ori X - a - b =1170
Ajutati-ma va rog!


Răspuns :

30x(X-a-b)=30X-30a-30b=1170
30×14=420=30X
==> -30a-30b=1170-420
-30a-30b=750
-a-b=750:30
-a-b=25
a+b= -25