U4: Solving Equations Flashcards
Addition and subtraction are ___ operations
Inverse
Multiplication and division are ___ operation
Inverse
The inverse of addition is ___
Subtraction
The inverse of subtraction is ___
Addition
The inverse of multiplication is ___
Division
The inverse of division is ___
Multiplication
Solving for x means getting x by ___
Itself
If 2x = 10, what is x?
x = 5
2x = 10
How do I get x by itself?
Divide both sides by 2
If x + 9 = 15, what is x?
x = 6
x + 9 = 15
How do I get x by itself?
Subtract 9 from both sides
If x/3 = 8, what is x?
x = 24
x/3 = 8
How do I get x by itself?
Multiply both sides by 3
If x - 12 = 19, what is x?
x = 31
x - 12 = 19
How do I get x by itself?
Add 12 to both sides
3x, 5x, and -10x are all ___ ___ because they all contain an x
Like terms
You can’t combine 3 and 5x because they are not ___ ___
Like terms
In the order of operations acronym PEMDAS, what does P stand for?
Parentheses
In the order of operations acronym PEMDAS, what does E stand for?
Exponents
In the order of operations acronym PEMDAS, what does M stand for?
Multiplication
In the order of operations acronym PEMDAS, what does D stand for?
Division
In the order of operations acronym PEMDAS, what does A stand for?
Addition
In the order of operations acronym PEMDAS, what does S stand for?
Subtraction
