Question

a)
87
b)
x - 2x
2x 4x
S1
17 - 38 x =
110
e)
d) 17x 611
10x - 10
30x = 9000
g) 2 - 3x
3x = -9
-94x
h) 1 -+ 5 7x
4
7x S 5-6х
i) 4.(x + 1) = 12
j) 9.(x - 3) + 1 = 18
k) 5(3-X) = 4x + 18​

Answer 1

Resposta:

A)X+X+X= 87

3x = 87

x = 87 / 3

x = 29

B) X-2X+4X=81

3x = 81

x = 81/3

x = 27

C)47+48+X=110

x = 110 - 47 - 48

x = 110 - 95

x = 15

D)-47x=611

x = 611/ (-47)

x = -13

E) -10X=.10

x = 10/(-10)

x = -1

F) -30X=9000

x = 9000/ (-30)

x = -300

G) 2-3X-9-4x

-3x - 4x -9 + 2

-7x -7

-7x = 7

x= 7/(-7)

x = -1

H) -4+5-7x-5-6x

-7x - 6x - 5 +5 - 4

-13x -4

-13x = 4

x = 4 / (-13)

x = -0,30

I)4. (X+1)-12

4x + 4 - 12

4x -8

4x = 8

x = 8 / 4

x = 2

J) 9.(N-3)+1=18

9n - 27 + 1 = 18

9n -26 = 18

9n = 18 + 26

9n = 44

n = 44/9

n = 4,88

K)5 (3-X)=4x+18

15 - 5x = 4x + 18

-5x - 4x = 18- 15

-9x = 3

x = 3 / (-9)

x = -0,33 ou -1 / 3