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9 December, 02:34

72 = r 90 Whats R in this equation

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  1. 9 December, 04:09
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    Rmemeber you can do anything to an equaiton as longn as you do it to both sides

    also x times 1/x=1 since x/x=1

    also x times 1=x

    72=r90

    divide both sides by 90

    72/90=r

    0.8=r

    r=0.8
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