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13 June, 16:09

4 + 4 / 5 b = 9 / 10 b

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  1. 13 June, 19:18
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    Step-by-step explanation:

    The first step is getting 4 on the other side so you minus 4 to get 4/5b=9/10b

    you then subtract 9/10 from 4/5 in order to do this you need to get 4/5 a denominator of 10, so you take 4/5 times 2/2 to get 8/10

    So now you can take 8/10-9/10=-1/10

    You now have - 1/10b=-4

    you then times - 10 on both sides to get b by itself

    b = - 4 * - 10

    b=40
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