n + 9n - 90 = 0

Discussion in 'Calculator Requests' started by math_celebrity, Jan 12, 2023.

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  1. math_celebrity

    math_celebrity Administrator Staff Member

    n + 9n - 90 = 0

    Solve for n in the equation n + 9n - 90 = 0

    Step 1: Group the n terms on the left hand side:
    (1 + 9)n = 10n

    Step 2: Form modified equation
    10n - 90 =

    Step 3: Group constants:
    We need to group our constants -90 and 0. To do that, we add 90 to both sides
    10n - 90 + 90 = 0 + 90

    Step 4: Cancel 90 on the left side:
    10n = 90

    Step 5: Divide each side of the equation by 10
    10n/10 = 90/10

    n = 9
     

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