1
z – y = A – B
2
y = 
z = 
z =
3
z – 
= A – B
– y = A – B
= A – B – y = A – B
4
(n – m)z = A – By = [bricht ab]
5
z = 
|
|
6
70r n : m = z : yy = 
7
m : n = y : zz = 
8
z – y = z – 
= A – B
= A – B
9
(n – m)z = A – B
10
z = 
11
z:y
12
n : m =
:
:
13
z = 
x = 
= 
x = =
14
y = 
x = 
x =
15
A – 
[bricht ab]
[bricht ab]
16