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24 February, 07:34

What must the value of x be, so that a parallel to b, m∠2 = 70°, and m∠7 = (3x + 10) °?

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  1. 24 February, 08:09
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    70=3x+10

    Subtract 10 from both sides

    60=3x

    Divide both sides by 3

    20=x

    x=20
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