One-Step Equations
8m = 24
What is m?
8m = 24
m = 3
3x + 2 = 5
What is x?
3x + 2 = 5
3x = 3
x = 1
-3m - 2m = 0
What is m?
-3m - 2m = 0
-5m = 0
m = 0
What is the inverse operation of addition?
Subtraction
8b + 3b = 22
What is b?
8b + 3b = 22
11b = 22
b = 2
11 + r = 29
What is r?
r + 11 = 29
r = 18
5 + 2x = 23
What is x?
5+2x=23
2x=18
x=9
-10p + 9p = 12
Solve for p
-10p + 9p = 12
-1p = 12
p = -12
What is the inverse operation of multiplication?
Division
19x -5 - 24x = 10
What is the value of x?
19x - 24x -5 = 10
19x -24x = 15
-5x = 15
x = -3
7h = 21
What is the value of h?
7h = 21
h = 3
-5 + 8x = 51
What is x?
-5 + 8x = 51
8x=56
x=7
-3a + 11 -7a = -9
What is the value of a?
-3a + 11 -7a = -9
-10a + 11 = -9
-10a = -20
a = 2
What operation connects the 3 to the x in 3x?
Multiplication
5(d - 2) = 40
What is d?
5(d - 2) = 40
5d -10 = 40
5d = 50
d = 10
a/9 =-3
What is the value of a?
a/9 = -3
a = -27
24 = 2 - 2x
What is x?
24 = 2 - 2x
22= -2x
-11=x
9t - 6 - 6t = 6
What is the value of t?
9t - 6 - 6t = 6
3t - 6 = 6
3t = 12
t = 4
What does isolating the variable mean?
Getting the variable by itself
2a + 5(a - 4) = 8
What is the value of a?
2a + 5(a - 4) = 8
2a + 5a -20 = 8
7a - 20 = 8
7a = 28
a = 4
x - 4.3 = 5.7
What is the value of x?
x - 4.3 = 5.7
x = 10
7 = -x + 2
What is x
7 = -x + 2
5 = -x
-5 = x
6+3(x+4)=54
What is x
6+3(2x+4)=54
6+3x+12=54
18+3x=54
3x=36
x=12
Finish the math law that keeps you out of math jail?
Whatever you do to one side of the equation...
Whatever you do to one side of the equation... You have to do to the other side of the equation
-6(m + 1) + 18 = 24
What is the value of m?
-6(m + 1) + 18 = 24
-6m -6 + 18 = 24
-6m + 12 = 24
-6m = 12
m = -2