Eunice's Post Scribe

Thursday, January 22, 2009
Eunice's live Post Scribe :)

Today I am doing a live post scribe. Today in math we are correcting our homework from yesterday. Our homework is the purple booklet pages 43 (all of it). Our homework today are pages 44 and 45. I will try to help you understand on how to solve algebra questions. I'm not going to solve all. I'll just solve some of it. I hope I could help you :D

PAGE 43

P. 3N+8=20 1. copy out the question
-8 -8 2. add zero pairs
3N/3=12/3 3. next, you have to divide 3 to get rid of the multiplication,
N=4
then whatever you do to left side you must do it on the right side.
4. last copy the variable equals the answer

TO VERIFY:
3n+8=20 1. copy out the question
3(4)+8=20 2. substitute the number of the variable
12+8= 20 3. solve
20=20 4. balance

c. -5u+6=41
-6 -6
-5u/5= -35/5
(-1) -u=-7(-1)
u=7

1. write down the question
2. add zero pairs. Whatever you do on the left side you must do it on the
other side to balance it out
3. next you have to get rid of the multiplication, then whatever you do on
the left side you must do on the other side
4. when you have a negative variable you have to get rid of the negative
because there is no such thing as a negative variable.
To get rid of a negative multiply a negative (-1).
You multiply it where the variable isand whatever you do on
that side you must do on the other side.

TO VERIFY:
-5u+6=41
-5-(-7)+6=41
35+6= 41
41=41

1. copy out the question
2. when verifying a negative variable you must
add another negative and multiply it to get rid
of the negatives
3. then solve the question

j. 2d-9=-29
+9=+9
2d/2=-20/2
d= -10

1. write the equation down
3. divide them to get rid of the multiplication
4. solve it

TO VERIFY:

j. 2d-9=-29
2(-10)+(-9)=-29
-20+(-9)=-29
-29=-29

1. copy out the question
2. substitute the answer to the variable
3. solve
4. balance

PAGE 44 & 45

Page 44:
1. 5n+4=-26
-4 -4
5n/5=-30/5
n=-6

1. write down the question
3. divide the 5 to cancel out the multiplication. Do the opposite.
Whatever you do on one side you must do on the other side.
4. solve it

TO VERIFY:
1. 5n+4=-26
5(-6)+4=-26
-30+4=-26
-26=-26

1. copy out the questions
2. substitute the answer to the variable
3. solve
4. balance

PAGE 45:

1. 5+4n=29
-5 -5
4n/4= 24/4
n=6

1. copy out the question.
3. divide the 4 to cancel out the multiplication.
Whatever you do on that side you must do on
the other side,too.
4.solve

TO VERIFY:

1. 5+4n=29

5+4(6)=29
5+24=29
29=29

1. copy out the question
2. substitute the answer to the variable
3. solve
4. balance

Well, I hope I helped you. We have a test tomorrow. All the questions will be coming from our purple book. Also, Mr. Harbeck will tell us where we can find tomorrow's quiz question. To support our School, wear you pyJAMMIES, because tomorrow is PJ day. Good Luck in the test tomorrow! :) Remember the techniques that I showed you, well Harbeck's technique. Remember his technique and positvely,absolutely sure than you'll be fine ffor tomorrow's quiz! :D good luck again (: