Inverses
What is the inverse of addition?
Subtraction
In an equation what is a constant?
A number that stands alone with no variable attached.
Solve.
x + 3 = 6
x = 3
Solve
c - 4 = 7
c = 11
Add.
1.03
+ 1.00
2.03
What is the inverse of subtraction?
Addition
What is a variable?
A letter that stands for an unknown amount.
Solve.
x + 4 = 14
x = 10
Solve.
x - 12 = 32
x = 44
Combine like terms to simplify
10y + 5x + 2y
12y + 5x
What is the inverse of multiplication?
Division
What does inverse mean?
The opposite, opposite operations
Solve.
27 = 9 + b
18 = b
Solve.
g - 11 = 59
g = 70
What is the value of 52 ?
25
What is the inverse of division?
Multiplication
What is an operator?
A symbol telling us to add, subtract, multiply, or divide.
Solve.
37 = 18 + a
19 = a
Solve.
62 = y - 19
81 = y
Distribute and simplify your answer.
3(x + 2y)
3x + 6y
True or false, equal signs have inverses?
False
How is an equation different from an expression?
Equations have an equal sign, expressions do not have an equal sign.
Solve.
100 = f + 25
75 = f
Solve.
x - 18 = 234
x = 252
Using PEMDAS (order of operations) simplify the expression.
23 + (4 - 1) x 2
14