Question

A) 2×-4-8=4×
B) 3×=×+1+7
C) 360+36×=30×
D) 2×+5-5×=-1
E) 5+6×=5×+2
F)×+2×-1-3=×
G)-3×+10=2×+8+1
H) 3 (×-2)=4 (-×+3)
I) 2 (×+1)-(×-1)=0
J) 5 (×+1)-3 (×+2)=0

Me ajudem nesse cálculo, por favor!

Answer 1

A) x=-6 B) x=4 C)x=-60 D) x=2 E) x=-3 F) x=2 G)x=1/5 H) x=18/7 I) x=-2 J) x=1/2

Answer 2

a)

2x - 4 - 8 = 4x2x - 12 = 4x
- 12 = 4x - 2x
- 12 = 2x
2x = - 12
x = - 12/2
x = - 6

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B)
3x = x + 1 + 7
3x = x + 8
3x - x = 8
2x = 8
x = 8/2
x = 4


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C)
360 + 36x = 30x
36x - 30x = - 360
6x = - 360
x = - 360/6
x = - 60

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D)
2x + 5 - 5x = - 1
- 3x = - 1 - 5
- 3x = - 6 ( - 1)
3x = 6
x = 6/3
x = 2

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E)
 5 + 6x = 5x + 2
6x - 5x = 2 - 5
x = - 3

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F) 
x + 2x - 1 - 3 = x
3x - 4 = x
3x - x = 4
2x = 4
x = 4/2
x = 2

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G)
- 3x +10 = 2x + 8 + 1
- 3x + 10 = 2x + 9
10 - 9 = 2x + 3x
1 = 5x
5x = 1
x = 1/5

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H)
3.(x - 2) = 4.(- x + 3)
3x - 6 = - 4x + 12
3x + 4x = 12 + 6
7x = 18
x = 18/7

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I)
2.(x + 1) - (x - 1) = 0
2x + 2 - x + 1 = 0
x + 3 = 0
x = - 3

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J)
5 (x + 1) - 3(x + 2) = 0
5x + 5 - 3x - 6 = 0
2x - 1 = 0
2x = 1
x = 1/2