Question

Daca a/3=12/b si 3/c=d/9 atunci rezultatul calculului a×b-c×d
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Answer 1

Răspuns:

$\frac{a}{3} = \frac{12}{b} = > a \times b = 12 \times 3 = 36$

$\frac{3}{c} = \frac{d}{9} = > c \times d = 3 \times 9 = 27$

$a \times b - c \times d = 36 - 27 = 9$