Question

Calcule a expressão 
42.[4.(32-4.V49)-1]:63

Answer 1

$42 \cdot [4 \cdot (32 - 4 \cdot \sqrt{49}) - 1] : 63 \\\\ 42 \cdot [4 \cdot (32 - 4 \cdot 7) - 1] : 63 \\\\ 42 \cdot [4 \cdot (32 - 28) - 1] : 63 \\\\\ 42 \cdot [4 \cdot 4 - 1] : 63 \\\\\ 42 \cdot [16 - 1] : 63 \\\\\ 42 \cdot [15] : 63 \\\\ 630 : 63 = \boxed{\boxed{10}}$