okay today in class Mr.Harbeck gave us some questions to help us with the test *hint**hint*

these are the pre test help questions:

n-6= 14

n+9= -4

-9+n= 17

25= -12+n

n- (-6)= 15

-n/ 3= 6

-30n = 180

1/4n= 12

-n/ 3=12

12n=48

Now I am pretty sure that most of these questions will be on the test...Harbeck made that very clear in class.

The first question that I will be doing is 12n=48

first you isolate the n. Since it is multiplication you have to divide.

What ever you do to one side you have to do to the other.

n=4 find to the nth value

12n=48

12(4)=48 rewrite the question with the nth value

48=48 compare

Now I will be doing is 1/4n=12

first of all 1/4 n is the same as n/4 and 1 n/4, but you would never write the 1because you can't do that on the test. So,

n/4=12

now you have to isolate the n so since we are dividing we have to multiply

(4)n/4=12(4)

n=48 find to the nth value

n/4 =12

48/4=12 rewrite the question with the nth value

12=12 compare to answer

I will now be doing -30n=180

okay since we are multiplying we have to divide to isolate the n

-30n/-30=180/-30

n= -6 find the nth value

-30n=180

-30(-6)=180 rewrite the question with the nth value

180=180 compare with the answer

well i hope it helped in sorry that I don't have the algebra tiles my paint stopped working hope it helped :) oh and I am sorry that my writing gets bigger I am not sure why that happened and I can't fix it :( sorry

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