Question

3)
a)
b)
c)
d)
d
Redura os termos semelhantes a um único termo
4x + 3x
Sy - 2y =
3a2-a?
x x - 5x
-3y + y - y
9-42 + 2
​

Answer 1

Resposta:

Reduza os termos semelhantes a um a um único termo:

a) 4x + 2x  = 6x

***********************

b) 3x + x  = 4x

********************

c) x + x  = 2x

**********************

d) 5x - 2x = 3x

************************

e) 5y - y  = 4y

************************

f) 3a - a  = 2a

*************************

g) x - 3x = - 2x

*********************

h) y - 2y = - y

**************************

i) -2m + 5m = 3m

**********************

j) 4a - 3a = a

***************************

l) 3x - 4x + 2x = 3x + 2x - 4x = 5x - 4x = x

***************************************

m) - 2y + 6y - y  = - 2y + 5y = 3y

******************************

___________

2- resolva as equaçoes, sendo U=Q:

a)

2x = 6

x  = 6/2

x = 3

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨

b)

2x = - 6

x = - 6/2

x = - 3

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨

c)

3x = 8

x = 8/3

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨

d)

3x = - 8

x = - 8/3

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨

e)

- 5x = 10  ( - 1)

5x = - 10

x = - 10/5

x = - 2

*************************

f)

- 7x = - 42 ( - 1)

7x = 42

x = 42/7

x = 6

***********************

g)

- 8x = 9 ( - 1)

8x = - 9

x = - 9/8

*********************************

h)

- 8x = - 4  (- 1)

8x = 4

x =  4   (:4)

     -----

       8  (:4)

x = 1/2

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨

i)

6x = 1

x = 1/6

**********************

j)

5x = 0

x = 0/5

x = 0

*********************

l)  

- 3x = 0

x = 0/(-3)

x = 0

*********************

m)

- 6x = 0

x = 0/(-6)

x = 0

********************

n)

2x = 8

x = 8/2

x = 4

****************

o)

4y = - 12

y = - 12/4

y = - 3

******************

p)  

3y = - 21

y = - 21/3

y = - 7

***************

q)

5x = 35

x = 35/5

x = 7

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨

r)

4x = 5

x = 5/4

*********************

s)

2x = - 11

Explicação:

deixa o coração plis