Răspuns:
[tex]7 \times ... {yx)6 - \times = 21 | \frac{75 \times = . { - \times = .y5 - \times \div = 0y6 \times \times \frac{?}{?} }^{?} }{?} \times \frac{?}{?} | \times \frac{?}{?} }^{?} [/tex]
