4.a. 6V7 + 3(V3-2V7)=
=6V7+ 3V3-6V7=
=3V3
>>se simplifica +6V7 cu -6V7<<
b. 2(5V3+3V2)-10V3=
=10V3+6V2-10V3=
=6V2
>>se simplifica +10V3 cu -10V3<<
c. 3(2V7-3V3)-V252=
=6V7-9V3-6V7=
=-9V3
>>se simplifica +6V7 cu -6V7<<
d.5(V5+2V7)-2(V7+3V5)=
=5V5+10V7-2V7+6V5=
=11V5+8V7
