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1)a+b=126 a=6xb
2)a+b=100 a:b=2419

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Răspuns :

a + b = 126

a = 6b

6b + b = 126

7b = 126

b = 18

a = 108

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a + b = 100

a = 2b + 19

(2b + 19) + b = 100

3b = 81

b = 27

a = 73