Question

1) Resolva as equações:
a) x-2=10
b) x-5=15
c) x-3=2
d) x+4=8
e) x+3=10
f) x-3=-1
g) -6x=-12
h) 2x=-8
i) 3y=18
semelhante e resolvecomo a outra​

Answer 1

$a = x - 2 = 10 \\ x = 10 + 2 \\ x = 12$

$b = x - 5 = 15 \\ x = 15 + 5 \\ x = 20$

$c = x - 3 = 2 \\ x = 2 + 3 \\ x = 5$

$d = x + 4 = 8 \\ x = 8 - 4 \\ x = 4$

$e = x + 3 = 10 \\ x = 10 - 3 \\ x = 7$

$f = x - 3 = - 1 \\ x = - 1 + 3 \\ x = 2$

$g = - 6x = - 12 \\ g = \frac{ - 12}{ - 6} \\ x= + 2$

$h = 2x = - 8 \\ x = \frac{ - 8}{2} \\ x = - 4$

$i = 3y = 18 \\ y = \frac{18}{3} \\ y = 6$