Question

ME AJUDEM POR FAVOR !!
RESOLVA:
A) x-3 = 5 B) 6 x - 4 = 2x + 8 C) x + 2 = 7 D) - 3 = x + 10 E) 4 x - 10 = 2 x + 2 F) x - 7 = - 7 G) X - 109 = 5 H) 5 (2 x 4) = 7(x + 1 )- 3 I) 4 (x+3) =1​

Answer 1

Resposta:

Explicação passo-a-passo:

a)

x-3 = 5

x = 5+3

x = 8

------------

b)

6 x - 4 = 2x + 8

6x-2x = 8+4

4x = 12

x = 12/4

x = 3

------------------

c)

x + 2 = 7

x = 7-2

x = 5

-------------------

d)

- 3 = x + 10

-x = 10+3

-x = 13      (*-1)

x = -13

------------------

e)

4 x - 10 = 2 x + 2

4x-2x = 2+10

2x = 12

x = 12/2

x = 6

----------------------

f)

x - 7 = - 7

x = -7+7

x = 0

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g)

X - 109 = 5

x = 5+109

x = 114

------------------

h)

5 (2 x 4) = 7(x + 1 )- 3

5(8)= 7x+7-3

40 = 7x+4

-7x = 4-40

-7x = -36   (*-1)

7x = 36

x = 36/7

x = 5,14

---------------------

i)

4 (x+3) =1​

4x+12 = 1

4x = 1-12

4x = - 11

x = -11/4

x = -2,75