Proszę o rozwiązanie tych zadań!! Zad 5,6,7,8 III gimnazjum.

5. [latex]frac{1}{R3;4}= frac{1}{R3} + frac{1}{R4}=frac{1}{5}[/latex] [latex]R3;4=5[/latex]Ω [latex]R=R1+R2+R3;4=10+10+5=25[/latex]Ω 6. [latex]R1;2=R3;4=10+10=20[/latex]Ω [latex] frac{1}{R} = frac{1}{R1;2} + frac{1}{R3;4} = frac{1}{10} [/latex] [latex]R=20[/latex]Ω 7. [latex]frac{1}{R1;3} = frac{1}{R2;4}= frac{1}{10} + frac{1}{10} = frac{1}{5}[/latex] [latex]R1;3=R2;4=5[/latex]Ω [latex]R=R1;3+R2;4=5+5=10[/latex]Ω 8. [latex]frac{1}{R2;3}= frac{1}{R3} + frac{1}{R2}=frac{1}{5}[/latex] [latex]R2;3=5[/latex]Ω [latex]R=R1+R4+R2;3=10+10+5=25[/latex]Ω