5.3.2. Precedencia del operador

((x * 5) >= 10) && ((y - 6) <= 20)

Operator Precedence:
	Logical NOT	!
 	Exponentiation	**
 	Multiplication and division	*, /, %
 	Addition and subtraction	+, -
 	Comparison	<=, >=, >, <
 	Equality	===, !==, ==, !=
 	Logical AND	&&	
	Logical OR	||
Tough Tortoise