Combining Like Terms
x + 2 - 3x =?
-2x + 2
12x(6 + 1)
84x
There are 95 bandaids in a pack, with 32 red, 4 blue, and 7 yellow, the rest are green. Betty takes 5 red, 1 blue, 2 yellow, and x amount of green. There is now 81. how many green bandaids were there to begin with, and how many left?
52 green to begin with, and 46 left.
32 + 4 + 7 + x = 95
x = 52
95 - 5 - 1 - 2 - x = 81
87 - x = 81
x = 6
52 - 6 = 46
Is a variable a) not consistent or having a fixed pattern or b) always the same, no matter the equation
a)
What are our 4 EA’s names?
Mrs. Gilson, Ms. Oude-Vashaar, Mrs. Juras, Mr. Delaney
x + 3 + 13x + 12 - 1 =?
14x + 14
24x(2 + 4) =?
=144x
Mrs Fortuna’s class buys 7 fans, Mr stewarts buys 4, and Mrs McGowan buys 6. They now, as a whole own 38 fans, and started with an equal amount. How many fans did each class start with? Represent as an algebraic expression.
Each class started with 7 fans
7 + 4 + 6 + 3x = 38
3x = 21
x = 7
Define equation:
a statement that the values of two mathematical expressions are equal (indicated by the sign =)
What is Mrs Abbey’s saying on the announcements every morning?
“We are smart, we are strong, we are stronger together, pitter patter Martha Cullimore… Lets do it!”
15x + 3 + 10x - 15=?
25x - 12
18x (3 + 2) =?
90x
Molly takes a dance class 4 times a month. The sign up fee is $50, and every class is $15. Sally has spent $240 on dance classes, including $80 shoes and a $40 bodysuit. How many months has she been doing classes (round to nearest tenth, 4 weeks in a month)?
1.2 months
15x + 50 + 80 + 40 = 240
15x = 70
x = 4.7
4.7 / 4
What is an expression?
An expression in math is a statement having minimum of two numbers, or variables, or both and an operator connecting them.
How many round tables are in our library?
Five
x + 2 + 3x+ 4x - 5x =?
3x + 2
22x(13 + 17x) =?
660x squared
A smoothie costs $7.00. For every extra supplement added, its an additional $0.75 per gram. Ella’s smoothie was $10.00. How many supplements did she get? Write an algebraic expression to represent.
Ella got 4 supplements.
$0.75x + 7 = 10
$0.75x = 3
x = 4
Is a binomial a) an algebraic expression of the sum or the difference of two terms or b) an expression of more than two algebraic terms, especially the sum of several terms that contain different powers of the same variable(s).
a), b) is polynomials.
Where was Martha Cullimore from?
Tytherington, South Gloucestershire Unitary Authority, Gloucestershire, England
(England counts)
-3 - 1 - 3x + 2x =?
-x - 4
-13(-13 + 13 - 11 - 33) =?
572
The sum of 3 numbers is 40. The second number is double the first, and the third is 4 less than the first. Write an algebraic expression, and find each number.
x + 2x + (x-4) = 40
x + 2x + x = 44
x = 11
The first number is 11, the second is 22, and the third is 7.
Define coefficient:
a numerical or constant quantity placed before and multiplying the variable in an algebraic expression (e.g. 4 in 4x y).
What is the name of Martha Cullimores newsletter?
The Cougar Chronicle