Question

4) Determine o valor de x em cada caso:
a) x : ( - 5 ) = + 10
c) ( - 14 ) : x = - 2
b) ( + 90 ) ; x = + 3
d) ( - 2 ) : ( - 1 ) = x

Answer 1

Resposta:

$a)x \div ( - 5) = + 10 \\ x = 10 \times ( - 5) \\ x = - 50$

$b)( + 90) \div x = + 3 \\90 = 3 \times x \\ 3x = 90 \\ x = \frac{90}{3} \\ x = 30$

$c)( - 14) \div x = - 2 \\ - 14 = - 2 \times x \\ - 2x = - 14 \\ x = \frac{ - 14}{ - 2} \\ x = 7$

$d)( - 2) \div ( - 1) = x \\ x = \frac{ - 2}{ - 1} \\ x = 2$