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15 May, 19:32

Alvin is 7 years older than Elga. The sum of their ages is 97. What is Elga's age?

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  1. 15 May, 23:06
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    Elga's age = x

    Alvin's age = x + 7

    x + x + 7 = 97.

    Simplify the left side of the equation

    2x + 7 = 97.

    Subtract 7 from each side

    2x = 90.

    Divide each side by 2

    x = 45

    Since x is equal to Elga's age, Elga is 45 years old
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