e) -2(×+5)=120 f) 4(-×+8)=100 g)-6(2-×)=28 h)35(×+1)=70 i)-12(-×+4)20
Soluções para a tarefa
Respondido por
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E) -2x-10+120 F)-4x+32=100 G)-12+6x=28 H) 35x+35=70
-2x=120+10 -4x=100-32 6x=28+12 35x=70-35
-2x=130 -4x=68 6x=40 35x=35
x=130 x=68 x=40 x=35
-2 -4 6 35
x=-65 x= -17 x=6,666 x=0
I) 12x-48=20
12x=20+48
12x=68
x=68
12
x=5,666
espero ter te ajudado
-2x=120+10 -4x=100-32 6x=28+12 35x=70-35
-2x=130 -4x=68 6x=40 35x=35
x=130 x=68 x=40 x=35
-2 -4 6 35
x=-65 x= -17 x=6,666 x=0
I) 12x-48=20
12x=20+48
12x=68
x=68
12
x=5,666
espero ter te ajudado
Arthu7:
espero q seja asim como vc quer olha aii
Respondido por
0
e)
-2.(x + 5) = 120
- 2x - 10 = 120
- 2x = 120 + 10
- 2x = 130 (-1)
2x = - 130
x = -130/2
x = - 65
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
f)
4(-×+8)=100
- 4x + 32 = 100
- 4x = 100 - 32
- 4x = 68 (-1)
4x = - 68
x = - 68/4
x = - 17
**************************
g)
-6.(2 - x) = 28
- 12 + 6x = 28
6x = 28 + 12
6x = 40
x = 40 (:2)
------
6 (:2)
x = 20/3
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
h)
35.(x + 1) = 70
35x + 35 = 70
35x = 70 - 35
35x = 35
x = 35/35
x = 1
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
i)
-12.(- x + 4) = 20
12x - 48 = 20
12x = 20 + 48
12x = 68
x = 68 (:4)
------
12 (:4)
x = 17/3
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
-2.(x + 5) = 120
- 2x - 10 = 120
- 2x = 120 + 10
- 2x = 130 (-1)
2x = - 130
x = -130/2
x = - 65
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
f)
4(-×+8)=100
- 4x + 32 = 100
- 4x = 100 - 32
- 4x = 68 (-1)
4x = - 68
x = - 68/4
x = - 17
**************************
g)
-6.(2 - x) = 28
- 12 + 6x = 28
6x = 28 + 12
6x = 40
x = 40 (:2)
------
6 (:2)
x = 20/3
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
h)
35.(x + 1) = 70
35x + 35 = 70
35x = 70 - 35
35x = 35
x = 35/35
x = 1
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
i)
-12.(- x + 4) = 20
12x - 48 = 20
12x = 20 + 48
12x = 68
x = 68 (:4)
------
12 (:4)
x = 17/3
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
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