Question

resolva
a) - 3x = 30
b) - 10x = - 150
c) - 150x = - 1000
d) - 15 = - 100x
e) 20x = - 820

Answer 1

Olá,

a)
-3x=30
x=30/-3
x=-10

b)
-10x=-150
x=-150/-10
x=15

c)
-150x=-1000
x=-1000/-150
x= 20/3 ou 6,6...

d)
-15=-100x
-100x=-15
x=-15/-100
x=-3/20 ou -0,15

e)
20x=-820
x=-820/20
x=-41

Espero ter te ajudado!

Answer 2

Olá!

a) - 3x = 30 .(-1)
3x = - 30
x = - 30 /3
x = -10

b) - 10x = - 150 .(-1)
10x = 150
x = 150 /10
x = 15

c) - 150x = - 1.000 .(-1)
150x = 1.000
x = 1.000 /150
x = 20/3

d) - 15 = - 100x .(-1
15 = 100x
x = 15 /100
x = 3/20

e) 20x = - 820
x = - 820/20
x = - 41