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11 November, 10:41

Solve for x.

1. 6x - 3x = 12

2. 3x - 5 = x + 3

3. 1/2x + 1/5x = 14

4. 2.5x + 1.0x = 7

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Answers (1)
  1. 11 November, 14:04
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    1. x=4

    6x-3x=12

    3x=12

    x=4

    2. x=4

    3x-5=x+3

    3x=x+8

    2x=8

    x=4

    3. x=20

    1/2x+1/5x=14

    7/10x=14

    7x=140

    x=20

    4. x=2

    2.5x+1.0x=7

    3.5x=7

    x=2
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