Question

resolva a equação do primeiro gral
a) 3+ x=0
b)23x+2=2
c)12-7+4x=25
d)5x-3x=30
e) 4x+10=45-3x
pfvr me ajudem
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Answer 1

Resposta:

a) 3 + x = 0

   x = 0 - 3

   x = -3

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b) 23x + 2 = 2

   23x = 2 - 2

   23x = 0

       x = 0/23

       x = 0

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c) 12 - 7 + 4x = 25

  4x = 25 - 12 + 7

  4x = 13 + 7

  4x = 20

    x = 20/4

    x = 5

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d) 5x - 3x = 30

   2x = 30

     x = 30/2

     x = 15

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e) 4x + 10 = 45 - 3x

   4x + 3x = 45 - 10

   7x = 35

     x = 35/7

     x = 5

Answer 2

Olá boa tarde!

a)

3 + x = 0

3 + x - 3 = 0 - 3

x = 0 - 3

x = -3

b)

23x + 2 = 2

23x = 0

x = 0

c)

12 - 7 + 4x = 25

5 + 4x = 25

4x = 25 - 5

4x = 20

x = 5

d)

5x - 3x = 30

2x = 30

x = 15

e)

4x + 10 = 45 - 3x

4x + 3x + 10 = 45

4x + 3x = 45 - 10

7x = 45 - 10

7x = 35

x = 5

espero ter ajudado, bons estudos ;)