Question

-8x+3=0
-7x+13=0
-72-18x-3=10x
-8x+16=0
-5x-44=0
-14x-1=0
-3x+18=30-x
-20x+10=0

Answer 1

Oi....

a)

- 8x + 3 = 0

- 8x = - 3⇒(-1)

8x = 3

x= 3/8

b)

- 7x + 13 = 0

- 7x = - 13⇒(-1)

7x = 13

x = 13/7

c)

- 72 - 18x - 3 = 10x

- 72 - 18x =  10x

- 18x  - 10x = 72

-28x = 72⇒(- 1)

28x = - 72

x = - 72/28 ÷ 4

x = - 18/7

d)

- 8x + 16 = 0

- 8x = - 16⇒(-14)

8x = 16

x = 16/8

x = 2

e)

- 5x - 44 = 0

- 5x = 44⇒(-1)

5x = - 44

x = - 44/5

f)

- 14x - 1 = 0

- 14x = 1⇒(-1)

14x = - 1

x = - 1/14

g)

- 3x + 18 = 30 - x

- 3x + x = 30 - 18

- 2x = 12⇒(-1)

2x = - 12

x = - 12/2

x = - 6

h)

- 20x + 10 = 0

- 20x = - 10⇒(-1)

20x = 10

x = 10/20 ÷ 10

x = 1/2

Espero ter ajudado