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Irina269
a fost răspuns

Afla numerele necunoscute, in fiecare caz a+75+75÷5=115 300-b×8-109=47 (48×c+216)÷40=27

Răspuns :

Danmp
a+75+75:5=115
a+75+15=115
a+90=115
a=115-90
a=25

300-b×8-109=47
300-8b-109=47|+109
300-8b=156
8b=300-156
8b=144|:8
b=18

(48×c+216)÷40=27
(48c+216):40=27|×40
48c+216=1080|-216
48c=864|:48
c=18




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