Question

resolva as equações:
a) 3 x - 5 = x - 2
b)3x-5=13
c)3x+5=2
d)x-(2x-1)=23
e)2x-(x-1)=5-(x-3)​

Answer 1

Resposta:

a)2(x+1)-3(2x-5)=6x-3

2x + 2 - 6x + 15 = 6x - 3

2x - 6x - 6x = - 3 - 2 - 15

- 10x = - 20 . (-1)

10x = 20

x = 20/10

x = 2

b)3x-5=x-2

3x - x = - 2 + 5

2x = 3

x = 3/2

x = 1,5

c)3x-5=13

3x = 13 + 5

3x = 18

x = 18/3

x = 6

d)3x+5=2

3x = 2 - 5

3x = - 3

x = - 3/3

x = - 1

e)x-(2x-1)=23

x - 2x + 1 = 23

x - 2x = 23 - 1

- x = 22 . (-1)

x = - 22

f)2x-(x-1)=5-(x-3)

2x - x + 1 = 5 - x + 3

2x - x + x = 5 + 3 - 1

2x = 7

x = 7 / 2

x = 3,5

Explicação passo-a-passo:

Answer 2

Resposta:

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