Grouping
Group the like terms and simplify (you do not have to solve)
2x + x + 2 + 4
3x + 6
-4 -(-5)
1
3x
---- = 6
4
3x = 6(4)
3x = 24
x = 8
x − 9=15
x = 24
What are the three main states of matter
solid, liquid, and gas
Group the like terms and simplify (you do not have to solve)
3x + 4 - x + 2 - 5
2x + 1
-3(-7) + 4
25
x + 5
------- = 7
4
x + 5 = 7(4)
x + 5 = 28
x = 28 - 5
x = 23
Evaluate the expression when x=3 and y=4
2x2+ y
= 22
What happened to the Acadians in the 1700s?
The British took over their land, imprisoned all of the men, and forcibly expelled the Acadians from their land.
Group the like terms and simplify (you do not have to solve)
2x + 4(5) + 3x - 7
5x + 13
4 + (-8) - (6)(-4) - (-2)
= 4 + (-8) - (-24) - (-2)
= 4 - 8 + 24 + 2
= 22
x + 3
------- = 2
x
x + 3 = 2x
x - 2x = 3
-x = 3
x = -3
3x + 6 x - 4
-------- = ---------
2 -2
(3x + 6)(-2) = (x - 4)(2)
-6x - 12 = 2x - 8
-6x - 2x = -8 + 12
-8x = 4
x = 4/-8
x = 1/-2
What are primary and secondary succession?
Primary: The land creates life from nothing
Secondary: The land recreates life after it has been wiped out
Solve for x
3(2x) + 10 - 3(4) - x = 3 + 2x + 7 - x + 4
6x - x + 10 - 12 = 2x - x + 3 + 7 + 4
5x - 2 = x + 14
5x - x = 14 + 2
4x = 16
x = 4
Solve for x
3x - (-2x) + 5 + (-4)(3x) = 19
3x - (-2x) + 5 + (-4)(3x) = 19
5x - 12x + 5 = 19
-7x = 19 - 5
-7x = 14
x = -2
2x + 4
-------- = 4
x - 1
2x + 4 = 4(x-1)
2x + 4 = 4x - 4
4 + 4 = 4x - 2x
8 = 2x
4 = x
Five times a number increased by seven is equal to forty-seven. What is that number?
5x + 7 = 47
5x = 47 - 7
5x = 40
x = 8
What is the difference between a simile and a metaphor?
Simile: A comparison using "like" or "as"
Metaphor: A comparison not using "like" or "as"
Solve for x
5^2 + 3(4x) - 2x - 16 = 3(2x - 1)
12x - 2x + 25 - 16 = 6x - 3
10x + 9 = 6x - 3
10x - 6x = -3 - 9
4x = -12
x = -3
Solve for x
(-1)(-3)(-1)(-1)(-1)(-1)(-5)(-1)(-1)(-1)(-2)(-1) = x - 1
(5)(3)(2) = x - 1
30 = x - 1
30 + 1 = x
31 = x
x - 2 3
______ = ______
x + 2 2
3(x + 2)
x - 2 = _________
5
(x - 2)(2) = 3(x + 2)
2x - 4 = 3x + 2
-4 - 4 = 3x - 2x
-8 = x
Three consecutive numbers add up to 51. What are the three numbers?
First number: x
Second number: x + 1
Third number: x + 2
x + (x + 1) + (x + 2) = 51
x + x + x + 1 + 2 = 51
3x + 3 = 51
3x = 48
x = 16
The numbers are 16, 17, and 18
Liam is saving money to buy a new bicycle.
He already has $40 saved and plans to save $15 each week from his allowance.
If the bike costs $160, how many weeks will it take Liam to have enough money to buy the bike?
15x = 160 - 40
15x = 120
x = 120/15
x = 8
It will take 8 weeks to buy the bike