What is a Variable?
What is a letter or symbol that represents an unknown value?
-6k + 7k
k
4f x 7
28f
n + 5 = 10
n = 5
g - 13 = 35
g = 48
What is a Constant?
What is a value or number that never changes in an equation or expression?
n + 4 - 9 - 5n
-4n - 5
7t x 2t
14t2
8 - p = 24
p = -16
-9 + w = 65
w = 74
What is a Coefficient?
What is a number that is multiplied with a variable?
12r + 5 + 3r - 5
15r
8h x 9h7 x 4h3
288h11
7t = -49
t = -7
p/15 = 13
p = 195
What is an Equation?
What is a group of terms, operations and values that show an equal relationship?
-5n + 3(6 + 7n)
16n + 18
5w4xy3 x 16x4y5z2
80w4x5y8z2
12 = -4(-6x - 3)
x = 0
-18 - 6k = 6(1 + 3k)
k = -1
What is Algebra?
What is a broad study of mathematics that encompasses symbols, properties, operations and rules for manipulating expressions and equations?
5(-2n + 4) + 2(n + 3)
-8n + 26
(3m - 1)(8m + 7)
24m2 + 13m - 7
-3(4d + 3) + 4(6d + 1) = 43
d = 4
-(1 + 7x) - 6(-7 - x) = 36
x = 5