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19 February, 15:23

What is the solution to this equation 7x=21

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  1. 19 February, 16:19
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    7x=21

    divide both sides by 7 to get x by itself

    7x/7 = 21/7

    cross out 7 and 7, divide by 7

    then becomes 1*1*x = x

    x = 21/7

    Answer:

    x = 3
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