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=0-28

7x=-28

x=-28/7

x=-4

Answer 2

a) 7x + 28 = 0
7x = -28
x = -28/7
x = -4

b) 3x - 9 = 54
3x = 54 + 9
3x = 63
x = 63/3
x = 21

c) 2x - 4 = 0
2x = 4
x = 4/2
x = 2

d) -8x + 14 = 14x + 4
14 - 4 = 14x + 8x
10 = 22x
x = 10/22
x = 0,45454...