Question

resolva:
a) -x=9
b)-x=-2
c)- 7x=14
d)-3x=10
e)-5x=-12
f)-4x=8

Answer 1

$a) - x = 9 \: \times ( - 1) \\ x = - 9 \\ b) - x = - 2 \times ( - 1) \\ x = 2 \\ c) - 7x = 14 \\ x = \frac{14}{ - 7} \\ x = - 2 \\ d) - 3x = 10 \\ x = - \frac{ 10}{3} \\ e) - 5x = - 12 \\ x = \frac{ - 12}{ - 5} \\ x = \frac{12}{5} \\ f) - 4x = 8 \\ x = \frac{8}{ - 4} \\ x = - 2$