Solving Equations

ax=b
3x = 0.6 <-- you need to divide both sides by 3
3x/3 = 0.6/3
x=0.2

LS RS check ;
3x=0.6
3(0.2)
0.6

x/a = b <-- you can multiply (a)(b)
x/5 = 0.3
5(x/5) = 5(0.3)
x = 1.5

LS RS check ;
x/5 = 0.3
x = 1.5/0.3

a/x = b
3.3/x = 1.1
x(3/3) = 1.1x
3.3/1.1 = 1.1x/1.1
3=x <--You can do it like this or ...
x=3 <-- this is the more proper way

LS RS ;
3.3/x = 1.1
3.3/3
1.1

2x = 3/4
Divide 2 by itself = 3/4 . 2/1
x = 3/4 x 1/2 . 2/1 x 1/2 makes 0.
3/4 x 1/2 = 3/8

LS RS check ;
2x = 3/4
2/1(3/8) =
6/8
3/4.

another way to the previous question is ...
2x/1 = 3/4
(2x)(4) = 3
8x/8 = 3/8
x = 3/8

-2 1/2x = -3 1/2 <-- make into a proper fraction
-5/2x = -7/2
x = -7/-5

another way of doing it ;
-5/2x = -7/2
-5/2 x -2/5
x = 7/5

and another way ...
-5/2x = -7/2
-5x(2) = 2(-7)
-10x/-10 = -14/-10
x = 14/10 or 7/5

YOUR HOMEWORK:
Read Pages 292-300
Do SYU
Do CYU#3
Practise, APPLY ALL
Extend 3/5
8.1 Homework Book