Page Comparison

$$ R_2+R_3-R_4-R_0=0 $$
$$ R_3-R_4 = R_0 - R_2 $$
$$ 7&(cos(\theta_3)+jsin(\theta_3)) - 6&(cos(\theta_4)+jsin(\theta_4)) = 10.5 - 2.5&(cos(\theta_2) + j sin(\theta_2)) $$
\begin{array}{rcl} y&cos(\theta_3) - 6&cos(\theta_4) = 10.5 - 2.5&cos(\theta_2)\\ f(x,y,z) & = & x + y + z  \end{array}