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Efectuati in 2 moduri , folosind proprietatea ,,a-b-c=a-(b+c),,:
a) 125-43-19
b) 1262-1005-98
c)986-237-16
d)12345-9899-237
e)1009-982-17
f)452-239-67

Dau coronita . Va rog frumos ajutati-ma.

Răspuns :

MerylStreep
a). 125-43-19=125-(43+19)=125-62=63
125-43-19=82-19=63
b). 1262-1005-98=1262-(1005+98)=1262-1103=159
1262-1005-98=257-98=159
c). 986-237-16=986-(237+16)=986-253=733
986-237-16=749-16=733
d). 12345-9899-237=12345-(9899+237)=12345-10136=2209
12345-9899-237=2446-237=2209
e). 1009-982-17=1009-(982+17)=1009-999=10
1009-982-17=27-17=10
f). 454-239-67=454-(239+67)=454-306=148
454-239-67=215-67=148

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