Question

1- Resolva as seguintes equações:
a) 2x + 6 = x + 18
b) 5x - 3= 2x + 9
c) 32x-3+ 2x + 1 = 3x = 18
d) 2x + 3x - 5 = 4x + 9
e) 2x + 1 - 32x - 5 = 6x - 3
f) 2x - x - 1 = 5 -(x - 3)
g) x - 2x - 1 = 23 h) 3x + 5 = 2
i) 3x - 5 = 13 j) 3x - 5 = x - 2 ​

Answer 1

Resposta:

a) x=12

b) x=4

c) x=20/31

d) x=14

e) x=1/36

f)x=-4

g)x=-24

h)x=-1

i)x=6

j)x=3/2

Explicação passo a passo:

a) 2x+6=x + 18

22x-x=18-6

x=12

b)5x-3=2x+9

5x-2x=9+3

3x=12

x=12/3

x=4

c)32x-3+2x+1=3x=18

32x+2x-3x=18+3-1

34x-3x=18+2

31x=20

x=20/31

d)2x+3x-4x=9+5

x=14

e)2x +1 - 32x - 5 = 6x-3

2x - 32x -6x = -3 + 5-1

36x = 1

x= 1/36

f)2x-x -1 =5x + 15

2x -x -5x= 15+1

2x- 6x = 16

-4x= 16

x= 16/ -4

x=-4

g ) x-2x=23+1

-X=24 (-1)

x=-24

h) 3x=2-5

3x=-3

x=-3/3

x=-1

i)3x=13+5

3x=18

x=18/3

x=6

j) 3x -x =-2+5

2x=3

x=3/2