Vocabulary
An unknown quantity in an expression or equation; usually expressed as a letter.
Variable
The quotient of a number and 4.
x/4
the product of c and 23 is 322
23c = 322
x/3 = 10
30
-29 = x - 5
-24 = x
A number that is before a variable that is multiplied by the variable.
Coefficient
8 more than a number.
8 + x
A number x divided by 3 is 7.
x/3 = 7
8x = -64
-8
In the equation, 4m + 2 = 8, these are the terms.
4m and 2
Expression
10 less than a number.
n - 10
7 less than a number is 10.
n - 7 = 10
x - 8 = -10
x = -2
-40 = -5e
8 = e
Math sentence that includes numbers, variables, operations and an equal sign.
Equation
The difference of twice p and 9.
2p - 9
The quotient 12 and a number 4 is 3.
12/n = 3
x + (-7) = 5
x = 12
Solve for x.
54 = -9x
-6 = x
The parts of an equation or expression that are separated by addition or subtraction signs.
terms
The sum of t squared and the product of 4 and x.
t2 (4x)
The sum of twice p and 4 is 20.
2p + 4 = 20
1/4 x = - 7
x = -28
What is would I do to isolate the variable?
x - 5 = 21
add 5 to each side