Question

Resolva as seguintes equações: a) 4x=24 b) 2x=30 c) 4x=-50 d) 7x + 9 =-21 - 3x e) 4x + 9 = 3x + 7

Answer 1

Resposta:

a) 4x=24

x=24/4

x=6

b)2x=30

x=30/2

x=15

c)4x=-50

x=-50/4

x=-12,5

d)7x+9=-21-3x

7x+3x=-21-9

10x=-30

x=-30/10

x=-3

e)4x+9=3x+7

4x-3x=7-9

x=-2