Vocabulary
Variable
a letter that stands for a number
=
Equals
Opposite of addition
-
Subtraction
Math sentence with an equals sign
Equation
x+9=14
X= 5
Solution
the answer to a problem
+
addition
Opposite of multiplication
Division -:
What is a coefficient?
The number multiplied by a variable
7y = 42
y=6
Inverse Operations
opposite operations
()
Multiplication
Opposite of subtraction
+
Addition
What property lets you multiply a number by everything inside parentheses?
Distributive Property
−5n = 20
n= -4
Simplify
To rewrite an expression in it's most basic form
-:
divide
Separates into equal groups
-:
division
Simplify using distribution:
−3(2x−5)
-6x + 15
x/-3 = 5
x = -15
Coefficient
The number that multiplies a variable in a term.
>=
Is greater than or equal to
A value that, when multiplied by itself, gives the original number.
Square Root sqrt
Solve:
2x + 5= 13
x= 4
−8 + y = 2
y= 10