Question

Questão 8: Resolva as equações a seguir:

a) x - 3 = 5 b) 6x - 4 = 2x + 8 c) x + 2 = 7 d) 4x – 10 = 2x + 2
e) x + 6x – 16 = 3x + 2x – 4 f) 4x = - 8x + 36 g) 15 = x +1 h) 3x = 12

Answer 1

Resposta:

Explicação passo-a-passo:

a) x - 3 =5

x = 5 + 3

x = 8

b) 6x - 4 = 2x + 8

6x - 2x = 8 + 4

4x = 12

x = 12/4

x = 3

c) x + 2 = 7

x = 7 - 2

x = 5

d) 4x - 10 = 2x + 2

4x - 2x = 2 + 10

2x = 12

x = 12/2

x = 6

e) x + 7x - 16 = 3x + 2x - 4

x + 7x - 3x - 2x = -4 + 16

3x = 12

x = 12/3

x = 4

f) 4x = -8x + 36

4x + 8x = 36

12x = 36

x = 36/12

x = 3

g) 15 = x + 1

15 - 1 = x

x = 14

h) 3x = 12

x = 12/3

x = 4

Answer 2

olá !!!

$a)\\x - 3 = 5\\x=5+3\\x=8\\\\b)\\6x - 4 = 2x + 8\\6x-2x=8+4\\4x=12\\x=12/4\\x=3$

$c)\\x + 2 = 7\\x=7-2\\x=5\\\\d)\\4x-10 = 2x + 2\\4x-2x=2+10\\2x=12\\x=12/2\\x=6$

$e)\\x + 6x – 16 = 3x + 2x – 4\\7x-3x-2x=-4+16\\2x=12\\x=12/2\\x=6\\\\f)\\4x = - 8x + 36\\4x+8x=36\\12x=36\\x=36/12\\x=3$

$g)\\15 = x +1\\-x=1-15\\-x=-14\\x=14$

$h)\\3x=12\\x=12/3\\x=4$

espero ter ajudado

Att: Jovem Lendário