Question

resolva as equações:

a)5x+3x=16
b)x+x+8=54
c) 7x-2-5x=18
d)12x-10x-4=3
e)-x-2x-4=11​

Answer 1

Resposta:

a)

5x + 3x = 16

8x = 16

x = 16/8

x = 2

b)

x + x + 8 = 54

2x = 54 - 8

2x = 46

x= 46/2

x = 23

c)

7x - 2 - 5x = 18

2x = 18 + 2

2x = 20

x = 20/2

x = 10

d)

12x - 10x - 4 = 3

2x = 3 + 4

2x = 7

x= 7/2

e)

-x - 2x - 4 = 11

-3x = 11 + 4

-3x = 15

x = - 15/3

x = - 5

Answer 2

Resposta:

a): x=2

b): x=23

c): x=10

d): x=7/2

e): x=-5

Explicação passo-a-passo:

a)5x+3x=16

8x=16

x=16/8

x=2

b)x+x+8=54

x+x=54-8

2x=46

x=46/2

x=23

c)7x-2-5x=18

7x-5x=18+2

2x=20

x=20/2

x=10

d)12x-10x-4=3

12x-10x=3+4

2x=7

x=7/2

e)-x-2x-4=11

-x-2x=11+4

-3x=15

x=15/-3

x=-5