Expressions
-3x – 9 + 15x
12x-9
𝑥 − 3 = −17
-14
7𝑥 − 1 = 6
1
200 − 338 = −6(6𝑥 − 7)
5
What do we call a letter that represents a number (ex: “x”)
Variable
-9x + 10(6x – 1)
51x-10
8 + 𝑚 = 16
8
4𝑥 − 7 = 5
3
5(6 + 3𝑥) + 7 = 127
6
What do we call a number that does not have a letter attached to it
constant
x + 3(10 + x) – 7x – x
-4x+30
−9 + 𝑥 = 9
18
36 − 2𝑥 = 24
6
28 − 7𝑥 = −4(−7𝑥 − 7)
0
What does it mean to combine like terms?
Add or subtract on the same side of the =
-10(1 – 9x) + 6(x – 10)
96x-70
-2𝑡 = 24
-12
8 + 3𝑥 = 5
-1
3(𝑥 − 3) − 5𝑥 = −3𝑥 − 6
3
What does it mean to do the inverse operation? Give me an example.
To do the opposite operation.
Examples :if it’s positive to the negative or if it’s adding subtract ; if it’s multiplying- divide, etc
-9(6x – 3) + 6(1 + 4x)
-30x+33
-3+x=-3
0
6-x=-2
8
2𝑥− 3x = −x + 7(x − 2)
2
Who is going to get an A on tomorrow’s test?
I am!