1. Equations – Success if you can do these
3x = 6
4x + 2 = 3x + 7
x/4 = 2
5x – 3 = 7 + 3x
x + 3 = 17
3(x + 2) = 12
x – 4 = 13
4(x + 5) = 32
3x + 4 = 25
3(2x – 2) = 2(x + 6)
4x – 3 = 17
4(3x + 5) = 2(x + 15)

2. How to solve the x + 3 = 10 type of equation
The 3 and 10
Could be any number

3. But you must subtract 3 from both sides
x + 3 =10
x + 3 – 3 =
x = 7
You get rid of the + 3 by - 3
But you must subtract 3 from both sides

4. just subtract 3 from both sides
For equations like
x + 3 = 10
just subtract 3 from both sides
x + 3 = 10
x =
x = 7
Like this

5. How to solve the x – 3 = 7 type of equation
The 3 and 7
can be any numbers

6. But you must to add 3 to both sides
x – 3 = 7
x – = 7 + 3
x = 10
You get rid of the – 3 by + 3
But you must to add 3 to both sides

7. x – 3 = 7 x – 3 + 3 = 7 + 3 x =10 For equations like x – 3 = 7
just add 3 to both sides
x – 3 = 7
x – = 7 + 3
x =10
Like this

8. Try these 1 x + 4 = 16 7 x – 5 = 12 2 x + 7 = 21 8 x – 7 = 3 39
x – 13 = 5 4
x + 12 = 28 10
x – 15 = 6 5
x + 6 = 7 11
x – 19 = 7 6
x + 23 = 52 12
x – 12 = 18

9.                              
Remember, always do the same thing to both sides.
Felix is checking that you do this properly.
x + 3 = 12
x + 3 – 3 = 12 – 3
x = 9