Addition
a + 13 = 14
What is 1
d - 7 = 9
What is 16
3n = 12
n = 4
y/6 = 3
y = 18
Give an example of a variable
a, b, c, ...
x + 4 = 4
What is 0
x - 2 = 6
What is 8
6y= 12
y = 2
x/4 = 3
x = 12
What is a variable?
A letter that stands for a mystery number
n + 8 = 10
What is 2
k - 5 = -5
What is 0
3x = 0
x = 0
e/7 = 5
e = 35
What is a coefficient?
The number attached to a variable
x + 100 = -100
What is -200
10 = x - 5
What is 15
10p = -100
p = -10
r / 2 = -7
r = -14
What is a constant?
A number by itself
What is -5
-2 = w - 4
What is 2
-15 = 5k
-3 = k
-50 = h/2
-100 = h
Give an example of an algebraic equation
x + 2 = 5