Can someone explain me how do you calculate this?

  • FiniteBanjo@feddit.online
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    3 months ago

    Well, we know that BA and DC are lines connecting points and therefor they are straight, that means opposite angles are equal.

    m/3 + 75 = m/2 + 64  
    We don't like those fractions we're gonna get rid of them, Lowest Common Denominator is 6  
    6(m/3 + 75) = 6(m/2 + 64)  
    6(m/3) + 6(75) = 6(m/2) + 6(64)  
    2m + 450 = 3m + 384  
    Now separate the variables to one side and numbers to the other  
    2m - 2m + 450 = 3m - 2m + 384  
    450 = m + 384  
    450 - 384 = m + 384 - 384  
    66 = m  
    Let's test that out by plugging it back into the original equation  
    66/3 + 75 = 66/2 + 64  
    22 + 75 = 33 + 64  
    97 = 97  
    Seems legit  
    m = 66  
    

    But why m? I think that’s m as in “y=mx+b” or the slope of the line? Kind of a weird notation but honestly just ignore it. It’s just a regular variable for now.