Substitution
One-Step Equations
Vocabulary
Equation Grab Bag
Two-Step Equations
100
h+5 h = 17
22
100
x + 5 = 14
x = 9
100
What is the difference between an expression and equation?
expressions have no equal sign equations have an equal sign
100
4x + 9 = 33
x = 6
100
7m - 3 = 18
m = 3
200
b - 14 + b b = 9
4
200
d - 2 = -32
d = -30
200
What is it called when you do the opposite operation to cancel out a number?
Inverse operation
200
x + 3x = -8
x = -2
200
12n - 14 = 58
n = 6
300
3a + 12 - 6a a = 4
0
300
7t = -77
t = -11
300
When a letter is used to represent an unknown number in math
A variable
300
4(y - 2) + y = -13
y = -1
300
m/7 +9 =16
m = 49
400
9y - 5b + 6c y=7 b=9 c=4
42
400
c/-2 = -7
c = 14
400
What does PEMDAS stand for?
Parentheses, Exponents, Multiplication, Division, Addition, Subtraction
400
-6(m + 1) + 18 = 24
m = -2
400
f/4 − 4 =11
f = 15
500
c + 4b -6p c = 100 b = 25 p = 5
-30
500
2a = 208
a = 104
500
What is the rule to adding Integers (negative/positive numbers)?
Same sign add, different sign subtract
500
7k - 8 + 2(k + 12) = 52
k = 4
500
6y + 7 = 49
y = 7
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