Transcript Equations – Success if you can do these

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)
How to solve the
x + 3 = 10
type of
The
equation
3 and 10
Could be any
number
You get rid
+
3 by - 3
of the
x + 3 =10
x + 3 – 3 = 10 - 3
x=7
But you must
subtract 3 from both
sides
For equations like
x + 3 = 10
just subtract 3 from
both sides
x + 3 = 10
x = 10 - 3
x=7
Like
this
How to solve the
x–3=7
type of
equation
The 3 and 7
can be any numbers
You get rid
–
3 by + 3
of the
x–3=7
x–3+3=7+3
x = 10
But you must to add
3 to both sides
For equations like
x–3=7
just add 3 to both
sides
x – 3 = 7
x – 3 + 3 = 7 + 3
x =10
Like
this
Try these
1
x + 4 = 16
7
x – 5 = 12
2
x + 7 = 21
8
x–7 =3
3
x + 9 = 35
9
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
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