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14 June, 17:30

Solve for x.

1.) 6x - 3x = 12

2.) 3x - 5 = x + 3

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

4.) 2.5x + 1.0x = 7

5.) 5x = 4 + x

6.) 2/3x = 1/2

7.) 3x - 2x + 4 = 15/3

8.) 4x + 7 = 2x + 17

9.) 0.5x = 10

+4
Answers (2)
  1. 14 June, 18:39
    0
    1. x = 4

    2. x = 4

    3. x = 20

    4. x = 2

    5. x = 1

    6. x = 0.75

    7. x = 1

    8. x = 5

    9. x = 20

    1) 6x - 3x = 12 (Subtract 6x - 3x)

    3x = 12 (Divide each side by 3)

    x = 4

    2) 3x - 5 = x + 3 (Subtract x from each side)

    2x - 5 = 3 (Add 5 to each side)

    2x = 8 (Divide each side by 2)

    x = 4

    3) 1/2x + 1/5x = 14 (Common denominator)

    5/10x + 2/10x = 14 (Add fractions)

    7/10x = 14 (Divide each side by 7/10)

    x = 20

    4) 2.5x + 1.0x = 7 (Add 2.5x + 1.0x)

    3.5x = 7 (Divide each side by 3.5)

    x = 2

    5) 5x = 4 + x (Subtract x from each side)

    4x = 4 (Divide each side by 4)

    x = 1

    6) 2/3x = 1/2 (Divide each side by 2/3)

    x = 0.75

    7) 3x - 2x + 4 = 15/3 (Simplify)

    3x - 2x + 4 = 5 (Subtract 3x - 2x)

    x + 4 = 5 (Subtract 4 from each side)

    x = 1

    8) 4x + 7 = 2x + 17 (Subtract 2x from each side)

    2x + 7 = 17 (Subtract 7 from each side)

    2x = 10 (Divide each side by 2)

    x = 5

    9) 0.5x = 10 (Divide each side by 0.5)

    x = 20
  2. 14 June, 19:05
    0
    1. x=4

    2. x=4

    3. x=20

    4. x=2

    5. x=1

    6. x=0.75 or 3/4

    7. x=11/3

    8. x=5

    9. x=5
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Home » Mathematics » Solve for x. 1.) 6x - 3x = 12 2.) 3x - 5 = x + 3 3.) 1/2x + 1/5x = 14 4.) 2.5x + 1.0x = 7 5.) 5x = 4 + x 6.) 2/3x = 1/2 7.) 3x - 2x + 4 = 15/3 8.) 4x + 7 = 2x + 17 9.) 0.5x = 10
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