Solving 2-Step Variable Equations

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Solving 2-Step Variable Equations
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What??? I just learned 1-step!

• Relax. Youll use what you already know to solve
  2-step equations.

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So, whats first?

• You need to break up the equation into its two
  steps.

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STEP 1

• The first step will always be either adding or
• subtracting.

-
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STEP 2

• The second step will always be either
• multiplying or dividing.

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Ex. 1 Lets try a problem.

• 8x 5 61

- 5
- 5
This problem has addition, so we need to subtract
first.
Whatever we do on one side, we have to do on the
other.
56

8x
7
Now, Step 2.

• 8x 56

Whatever we do on one side, we have to do on the
other.
This problem has multiplication, so we need to
divide now.
8
8
x
7

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Ex. 2 Lets try another problem.

• 3a - 8 4

8
8
This problem has subtraction, so we need to add
first.
Whatever we do on one side, we have to do on the
other.
12

3a
9
Now, Step 2.

• 3a 12

Whatever we do on one side, we have to do on the
other.
This problem has multiplication, so we need to
divide now.
3
3
a
4

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Now you try some problems.

• Copy these problems onto a piece of paper.
• Break each problem into 2 parts to solve.
• Show all your work!

2. 12t 6 90
1. 7f 5 40
4. 4y 8 -12
3. 5q 7 13
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More practice

• 1. 5x - 5 25 2. 19 3x 7
• 3. -5x 23 8 4. 17 7 8y
• 5. -4 -5n 6 6. 18 -12 5z