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Aflati x€N stiind ca:
[tex] \frac{(a - 5) \times (b + 3 )}{45} = \frac{11}{9} [/tex]
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Răspuns :

(a - 5) × (b + 3) = 45×11/9

(a - 5) × (b + 3) = 55 = 11 × 5 = 5 × 11

a - 5 = 11 ==> a = 16
b + 3 = 5 ==> b = 2

a - 5 = 5 ==> a = 10
b + 3 = 11 ==> b = 8

(a - 5) × (b + 3) = 55 = 1 × 55

a - 5 = 1 ==> a = 6
b + 3 = 55 ==> b = 52