Question

Daca a+b=105 si a÷b=7,9 cat este a si b

Answer 1

a:b=7 rest 9, a=7b+9

a+b=105

7b+9+b=105, 7b+b=105-9, 8b=96, b=96:8, b=12

a+12=105, a=105-12, a=93

a=93, b=12

verificare: 93+12=105, 93:12=7 rest9

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