Electric circuits voltage question

https://www.allaboutcircuits.com/textbook/direct-current/chpt-5/what-are-series-and-parallel-circuits/

Here some examples of chapter dealing with modularization. Pseudocode only plz!

Example 2

Example 3

Electrical circuits may be connected in series or in parallel. You can read a general description at https://www.allaboutcircuits.com/textbook/direct-current/chpt-5/what-are series-and-parallel-circuits The first two pictures shown there are Series 2 2 3 8 6 above R1, R2 and R3 are resistors (electrical components that reduce the amount of current in the circuit to a desired amount), the arrows show the direction in which the current is flowing, and the symbol on the far left, with+ and-next to it is a voltage source. A few standard formulas that we can apply to these circuits are: Total resistance in the series circuit above R1 + R2 + R3 Total resistance in the parallel circuit 1/ 1/r1 1/r2 1/r3