Question

resolva as equações

a)-X=9

b)-X=-2

c)-7X=14

d)-7X=-14

e)-3X=10

f)-5X=-12

g)-4X=8

h)-3X=-9

i)-5X=15

j)-2X=10

k)15=-3X

l)-40=-5X

​

Answer 1

Oi...

a)

- x = 9 (-1)

x = - 9

b)

- x = - 2 ( - 1)

x = 2

c)

- 7x = 14 (-1)

7x = - 14

x = - 14/7

x = - 2

d)

- 7x = - 14 ( - 1)

7x = 14

x = 14/7

x = 2

e)

- 3x = 10 ( - 1)

3x = - 10

x = - 10/3

ou x = - 3,333...

f)

- 5x = - 12 ( - 1)

5x = 12

x = 12/5

ou x = 2,4

g)

- 4x = 8 (-1)

4x = - 8

x = - 8/4

x = - 2

h)

- 3x = - 9 (-1)

3x = 9

x = 9/3

x = 3

i)

- 5x = 15 (-1)

5x = - 15

x = - 15/5

x = - 3

j)

- 2x = 10 ( - 1)

2x = - 10

x = - 10/2

x = - 5

k)

15 = - 3x

3x = - 15

x = - 15/3

x = - 5

l)

- 40 = - 5x

5x = 40

x = 40/5

x = 8

Espero ter ajudado