Question

Daca a/12=55/b

calculați a∙b/11− 60

Dau coroana

Answer 1

$\frac{a}{12} = \frac{55}{b} \implies a \cdot b = 12 \cdot 55 \iff \frac{a \cdot b}{11} - 60 = \frac{12 \cdot 55}{11} - 60 = 12 \cdot 5 - 60 = 60 - 60 = \boxed{0}$