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i think i fixed it; it just takes straight latex
'''V''' is the variable for voltage, '''I''' is for current, and '''R''' is for resistance. If you know two of the variables, you can solve for the third! Let’s do a simple calculation. We actually know the total ''V'' for the system: 9V. The LDRs you are using have a minimum resistance of 3kΩ, so we also know ''R''! All we need to do is solve for ''I''.
<math>V = IR_minIR_{min}</math>
<nowiki><math>I = \frac{V}/R_m_i_n{R_{min}}</math></nowiki>
<math>I = (\frac{9V)}/({3kΩ)}</math>
<math>I =3mA</math>
