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    what does (-4a) + (-6a) equal?

    0  Views: 330 Answers: 2 Posted: 13 years ago

    2 Answers

    (-10a)  .  When you know the value of "a", you can find the real value.  If a=6:


    -10  x  6 =  -60    


    HOWEVER, is a = (-6):


    (-10)  x ( -6) = 60

    See the result is very simple.


    TIps- You should know the addition rule of integer.


    Solution to the problem:


    Question: ( - 4a) + ( -6a)


    1. We can write  (-4a) as  -4a = (-a) + (-a) + (-a) +(-a) 


    2. Similarly , we can write (-6a) = (-a) +(-a) +(-a) +(-a) +(-a) + (-a)


    3. Then, ( - 4a) + ( -6a) = [(-a) + (-a) + (-a) +(-a)] + [ (-a) +(-a) +(-a) +(-a) +(-a) + (-a)]


    Now, count the number of a , it is 10,


    your result is    -10a.


    Note: Remember! when we add , a +a, it is equal to 2a


    i.e. a +a = 2a, in fact it is +2a 


    We do not write the "+" sign if it comes first.


    In the same way (-a) + (-a) = -2a


    Hope this helped you to some extent. Now enjoy doing such kind of problems with your friends.


     



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