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# Solving One Step Equations

Algebra one - solving an equation with one variable on one side
by

## Anjie Julseth

on 21 September 2012

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#### Transcript of Solving One Step Equations

Step One Take the number and cancel it out by adding it or subtracting it by itself. example one answer -4 + x = 24 +4 +4 -------------- 28 x = 28 8 - x = -7 example two answer -8 -8 ------- -15 x = 15 Last Friday Frank had \$29. Over the
weekend he received some money for
cleaning the attic. He now has \$41. How
much money did he get from cleaning the attic? Divide the problem in half through the = sign. Now take the number to the left of the = and do the opposite operation to itself to turn it in to 0. What you do on one side you do to the other so you need to add/subtract that same number to the right side, what you get is what x equals. Steps example 1 x + 1 = 2
- 1 -1
1 How to do a one step equation !!! example 2 X + 10 = 20
- 10 -10
10 Now you try some. x - 20 = 10 x + 600 = 1000 x - 12 = 4 x + 33 = 50 answers x = 30 X = 16 X = 400 X = 17 example 3 x + 5 = 45
- 5 -5
40 example 4 x + 100 = 128
- 100 -100
28 Real World Example Real World Problem Equation And Example X + 29 = 41
- 29 -29
12 Thanks For Watching !!!! : ) Solve for x.

6x = 42 Solve for x.

-8x = -72 What does it mean when the number
is stuck next to the variable?

What is the opposite of multiplication?

8 x 9 = 72. Fill in the blanks so that the
multiplication fact is written as a division fact.
9 = ___/____ What would you do
to solve this equation?

4x = 10 Solve for x.

-5x = 55 Solve for x.

5 = -10x Solve for x.

x/6 = 5 Solve for x.

x/10 = -6 You still have to get x by itself to solve the
equation.

What would you do to this equation to get
x by itself?

x/5 = 2

Why do you have do it to both sides of the
equation? Solve for x.

(3/4)x = 6 Solve for x.

(2/3)x = -8 To solve an equation like (2/3)x = 8, you
multiply by the reciprocal.

A reciprocal is a flipped over fraction.

Give the reciprocals of each fraction.
5/6 =
2/5 =
3/8 = Which fraction would you multiply
by to solve this equation?

(2/3)x = 10 Solve for x.

(5/8)x = -5
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