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One step equations
Add
Subtract
Multiply
Divide
Notes: Solving 1-step equation
To solve an equation simply do the
inverse on BOTH side of the equation.
The left side will CANCEL.
Plug in your variable answer to check to
see if the equation is correct!
If not…re-do the problem.
Addition example…
X + 5 = 19
X + 5 - 5 = 19 -5
X = 14
26 + X = 44
26 - 26 + X = 44 -26
X = 18
Try the following on your
paper.
Plug in & check before moving to the next
problem
X + 3= 108
5 + X = 97
X + 6.6= 13.5
Answers!!!
X = 105
X = 92
X = 6.9
Equations with subtraction
X-5=8
X - 5 + 5 = 8+5
X = 13
55 - X = 86
55 - 55 + X = 86 - 55
X = 31
Try the following on your
paper.
Plug in & check before moving to the next
problem
X - 37 = 81
X - 34 = 66
X – 2.9=3.33
Answers!!!
X = 118
X = 100
X = 10
X = 6.23
Multiplication of Equations
3X = 9
3X/3 = 9/3
X=3
5X = 40
5X/5 = 40/5
X=8
Try these on your paper.
4X = 16
2X = 92
5X=255
¾X=½
Answers!!!
X=4
X = 46
X = 51
X = 2/3
Division of Equations
remember kcf when dividing fractions
1/2X = 4
(2/1)1/2X = 4(2)
X=8
3/4X = 6
(4/3)(3/4)X = 6(4/3)
X=8
Try these on your paper.

X/3 = 9

X/4 = 7

1/3X = 1

X/4 =4
Answers!!!
X = 27
X = 28
X=3
X = 16
HW time…Now, get one LL piece of paper. Number AS
you go. Show the process… inverse/opposites used to
solve each AND the check. Spread work out!
1) 4X = 52
6) X + 25 = 65
2) X/2 = 428
7) X - 94 = 643
3) X - 46 = 93
4) X+ 4.5 = 104.8
5) X/33 = 4
8) 9X = 642
9) X + 6.50=59
10) X/9 = 558