Order of operations
What do you use to solve these?
PEMDAS
What do you always need to do at the end of an equation?
Simplify
< - is what?
>- is what?
less than
Greater than
what does intersection mean?
Joined by the word and
If you have |25| what does that mean
25
What does PEMDAS stand for
Parenthesis, exponents, multiplication, division,addition,subtraction
We always use what to solve?
PEMDAS
<_
>_
Less than or equal to
Greater than or equal to
What does a union mean?
Joined by the word or
If you have |-3| what does that mean
3
what is a variable
A letter that represents unknown values
One step equation: -2w+146=130
W=8
If the inequality eats the letter which way does the arrow go
Arrow goes right
what does “and” and “or” mean
And means it will be over lapping
Or means pointing away from each other
Solve: 6 and 15
9
(30-3)divided by 3
27
A=4
If the inequality eats the number which way does the arrow go
The arrow goes left
If you are dividing by a negative number what do you do?
Always flip the sign
Solve: -5 and 8
13
6+(5+8)x4
58
multiple step equations: 7x-3x-8=24
X=8
Solve: x+5<8
-6v + 4 >-14v-28
X<3
32/-8 > V
8x+8>_-64 and -7-8x >_ -79
X>_ -9 and X<_8
|x|=3
|-3|=3
Solve
X=(-3,3)