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Khoi
Khoi asked in Education & ReferenceHomework Help · 6 months ago

Hey! I don't know this, can you explain to me? Link: https://justpaste.it/2e96a?

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  • Mr. Smartypants
    Lv 7
    6 months ago

    Easy.  Let's use the variable b for the number of marbles in a bag.

    You bought 3 bags, so you have 3b marbles.

    Your friend bought one bag but he also has 24 marbles, so he has b + 24 marbles.

    Now you both have the same amount  So, 3b = b + 24.  That's our equation.  Now we solve for b.

    3b = b + 24

    Let's subtract b from both sides.

    2b = 24

    So now it's simple.  Divide both sides by 2.

    b = 12

    And there ya go.

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