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  • Chris Laurie

    Member
    November 21, 2020 at 10:47 am

    Marianne,

    I’d suggest adding the algebraic expression below. If you are a smartboard ( Smartnotebook 11) user they have a dynamic Scale within the Smart Exchange.

    X – $3.50 = $1.50

    Scale:

    X – 3.50 + 3.50 = $1.50 + 3.50