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
Soluções para a tarefa
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