Solve 1/12=frac{b_{1}}{b_{2}}=frac{t_{1}}{c_{2}}

$$\frac { 1 } { 12 } = \frac { b _ { 1 } } { b _ { 2 } } = \frac { t _ { 1 } } { c _ { 2 } }$$

Evaluate (complex solution)

$$\frac{1}{12}=\frac{b_{1}}{b_{2}}\text{ and }\frac{b_{1}}{b_{2}}=\frac{t_{1}}{c_{2}}$$

Solve for t_1

$$t_{1}=\frac{c_{2}}{12}$$

$$b_{1}=\frac{b_{2}}{12}\text{ and }c_{2}\neq 0\text{ and }b_{2}\neq 0$$

Solve for c_2

$$c_{2}=12t_{1}$$

$$b_{1}=\frac{b_{2}}{12}\text{ and }b_{2}\neq 0\text{ and }t_{1}\neq 0$$