Question
Verify the second equation in Example 21.5 by substituting the values found for the currents $I_1$ and $I_2$.

The equation is $-3I_2 + 18 - 6I_1 = 0$. $I_1 = 4.75 \textrm{ A}$, $I_2 = -3.50 \textrm{ A}$.

Yes, the equation equals zero, as expected.

Solution Video