Vocabulary
the first step of solving an equation
drawing a line
r - 7 = 21
r = 28
r - 3.8 = 15
r = 18.8
(1/2)x = 15
x = 30
43.5 + 9
52.5
a number that contains a decimal point
decimal
32 = h + 17
h = 15
51.7 = h + 24.9
h = 26.8
(3/5)w = 9
w = 15
18.74 - 3.2
15.54
shows that two things are equal
equation
4n = 36
n = 9
13n = 19.5
n =1.5
k + (2/3) = 1
k = 1/3
19.2 x 3.7
71.04
a symbol for an unknown value
variable
12y = 84
y = 7
4.2y = 70.8
y = 16.857
4 = b - (1/6)
b = 4 1/6
153 / 2.5
61.2
an operation that causes the opposite effect
inverse operation
z/8 = 21
z = 168
z/9.2 = 35.8
z = 329.36
g + (1/5) = 3
g = 2 4/5
97.54 / 1.2
81.283