According to the given question we have the following data:
Solve for b: a+b÷j =z
In order to solve b in ths equation we would have to make the following:
a+b÷j =z
First move a to the other with the opposite sign
b÷j=z-a
As j is divided by b, we would have to move j to other side multiplying z-a as follows:
b÷j=z-a
b=j(z-a)
b=jz-ja
Therefore, b would be b=jz-ja