Question

resolva as equações
A)7x + 28 = 0?
B)3x - 9 = 54
C)2x - 4 = 0
D) - 8x + 14 = - 14x + 4

Answer 1

a) 7x + 28 = 0

7x = -28

x = -28/7

x = -4

b) 3x - 9 = 54

3x = 54 + 9

x = 63/3

x = 21

c) 2x - 4 = 0

2x = 4

x = 4/2

x = 2

d) -8x + 14 = -14x + 4

-8x + 14x = + 4 - 14

6x = -10

x = -10/6

x = -5/3