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Aflati a+b daca x=14 si 10a+10b+56+x=1170.....Please!Dau coroana!Ajutati-ma!Va rog

Răspuns :

10 (a +b ) + 56 + x = 1170 
10· (a +b)  + 56 + 14 = 1170
10·(a +b) + 70 =1170
10·(a +b) = 1170 - 70 =1100
a+b = 1100 :10
a +b = 110