Question

7) 2X+X=-3+8
8) -X+5=8-3X+2
9) -4+2-3X=9
10)-5-2X=-1+9X
11) 2(X-1)=0
12) 4-(X-1)=2
13) -4-(2X+3)-1=0
14) 12+2(X-3)=-X+9
15) X-3(2X-4)=5

Answer 1

7) 2x + x = - 3 + 83x = 5
x = 5/3
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8)
 - x + 5 = 8 - 3x + 2
- x + 5 = 10 - 3x
- x + 3x = 10 - 5
2x = 5
x = 5/2
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9)
- 4 + 2 - 3x = 9
- 2 - 3x = 9
- 2 - 9 = 3x
- 11 = 3x
3x = - 11
x = - 11/3
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10)
- 5 - 2x = - 1 + 9x
- 5 + 1 = 9x + 2x
- 4 = 11x
11x = - 4
x = - 4/11
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11)
 2(X-1)=0
2x - 2 = 0
2x = 2
x = 2/2
x = 1
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12)
4 - (x - 1) = 2
4 - x + 1 = 2
5 - x = 2
5 - 2 = x
3 = x
x = 3
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13)
- 4 - (2x + 3) - 1 = 0
- 4 - 2x - 3 - 1 = 0
- 4 - 2x - 4 = 0
- 8 - 2x = 0
- 8 = 2x
2x = - 8
x = -8/2
x = - 4
----------------------------------------------------------
14)
12 + 2.(x - 3) = - x + 9
12 + 2x - 6 = - x + 9
6 + 2x = - x + 9
2x + x = 9 - 6
3x = 3
x = 3/3
x = 1
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15)
x - 3.(2x - 4) = 5
x - 6x + 12 = 5
- 5x = 5 - 12
- 5x = - 7 ( - 1)
5x = 7
x = 7/5
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