1Thv §9.5 More: Solving equations Balance Method

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1Thv §9.5 More: Solving equations Balance Method
Some more useful PRACTICE for the coming 2 test 
follows now!
Make a good use of this by
+ opening your Notebook and
+ making the tasks!

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Example 1:
Solve: (by writing down the STEPS that you learnt!)
-5c + 24 -3c = 28



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Example 1 - SOLUTION:
Solve: (by writing down the STEPS that you learnt!)
                  -5c + 24 -3c = 28              Take the LIKE TERMS together.
                  -8c + 24 = 28                       Subtract 24 from both sides.
                  -8c = 4                                    Divide by -8
                       c = 4 : -8
                       c = - 0.5

                  


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Task 1: 
Copy and Solve it in your Notebook 
with the BALANCE Method. Step by step!
Solve:
5 t + 15 = 25
timer
1:30

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SOLUTION Task 1: 
With the BALANCE Method. 

Solve:
5 t + 15 = 25               Subtract 15 on both sides.
5 t = 10                          Divide by 5 on both sides.
t = 2                   

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Example 2:

Solve:        4 (f + 3) = 12            Let us write a times sign:
                     4 x (f + 3) = 12         We divide by 4 on both sides.
                             f + 3 = 3             We subtract 3 on both sides.
                             f = 0

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Task 2:
Copy and Solve in your Notebook:        7 (t - 9) = 21 
timer
1:00

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Task 2:
Solve:        7 (t - 9) = 21                 Add a times sign.        
                     7 x (t - 9) = 21              Divide by 7 on both sides.
                            t - 9 = 3                   Add 9 on both sides.
                            t = 12
              

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TASK 3
Copy and Solve:
12 v - 24 - 14v = 6
timer
1:30

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SOLUTION      TASK 3
Copy and Solve:
12 v - 24 - 14v = 6                Take the LIKE TERMS together.
- 2 v - 24 = 6                           Add 24 on both sides.
- 2 v = 30                                  Divide by - 2.
       v = - 15

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Homework time!
After all this practicing together now 
work on your own!

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