The sum of 8 times a number and 7 equals 3.​

Question

The sum of 8 times a number and 7 equals 3.​

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Cherry 6 months 2021-07-21T02:00:38+00:00 2 Answers 9 views 0

Answers ( )

    0
    2021-07-21T02:01:54+00:00

    Answer:

    -\frac{1}{2}

    Step-by-step explanation:

    “The sum of 8 times a number (x) and 7 equals 3.”

    Let, “a number” = x

    8x + 7 = 3

    Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.

    PEMDAS is the order of operation, and equals:

    Parenthesis

    Exponents (& Roots)

    Multiplication

    Division

    Addition

    Subtraction.

    First, subtract 7 from both sides of the equation:

    8x + 7 (-7) = 3 (-7)

    8x = 3 – 7

    8x = -4

    Next, divide 8 from both sides of the equation:

    (8x)/8 = (-4)/8

    x = -4/8

    x = -1/2

    -1/2 is your number, or -0.5

    ~

    0
    2021-07-21T02:02:30+00:00

    Answer:

    8x + 7 = 3 (x = -0.5)

    Step-by-step explanation:

    I think this is the equation for what you said

    If this is the right equation then x would equal -0.5

    (hope this helps)

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