Question

resolva as equações abaixo:
a) 4x = - 40
b) x + 9 = 0
c) x - 6 = -10
d) x/4 = -4

Answer 1

$a) 4x = - 40\to x= \frac{-40}{4} \to x=-10\\\\\\b) x + 9 = 0\to x=-9\\\\\\c) x - 6 = -10\to x=-10+6\to x=-4\\\\\\d) \frac{x}{4} = -4\to mmc=4 \to \frac{4x}{4} = \frac{-16}{4} \to 4x=-16\to x= \frac{-16}{4}\to x=-4$