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Math

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Please help solve and explain it, thank you.

1. Juan, Steve and Gabriella bought a total of 30 markers at an art store. Juan bought 3 more markers than Steve. Gabriella bought 7 times as many markers as Steve. How many markers did each buy?

2.

  • Math -

    j+s+g = 30
    j = s+3
    g = 7s

    s+3 + s + 7s = 30
    9s = 27
    s = 3

    so, j=6 and g=21

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