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9 November, 06:19

Solve the following equation y=3/2x-5 when y=7

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Answers (2)
  1. 9 November, 06:47
    0
    Step-by-step explanation:

    Step 1: 7=3/2x-5

    (it's given that y=7, so we can substitute 7 for y)

    Step 2: 12=3/2x

    (Add by 5 on both sides, we have to isolate the "x" in order to find it's value)

    Step 3: 12 (2x) = 3

    (multiply by 2x on both sides)

    Step 4: 24x=3

    Step 5: x=3/24

    (we divide by 24 on both sides to get the "x" alone)

    Step 6: x=1/8

    (3/24 can be further simplified into 1/8, so x=1/8)

    Check:

    we can check if the answer [x=1/8] is right by substituting 1/8 for x in the equation y=3/2x-5, if y=7 after solving, then we know the answer is right.

    step 1: y=3/2 (1/8) - 5

    (substitute 1/8 for x and then simplify that fraction)

    step 2: y=12-5

    Step 3: y=7

    The answer 1/8=x can now be confirmed.
  2. 9 November, 06:49
    0
    X=8

    Step-by-step explanation:

    7 = 3/2x - 5

    Add 5 to each side

    12 = 3/2x

    Simplify

    12 = 1.5x

    Divide each side by 1.5

    8 = x

    Check the solution

    7 = 3/2 (8) - 5

    7 = 12 - 5

    7 = 7
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