Solving Log Equations

A chemist measures a solution's hydrogen concentration and writes the pH as −log₁₀(H). The unknown H is trapped inside a logarithm — how do they free it? This is the log equation problem: the variable is locked behind a log, and ordinary algebra can't reach it. The key is a single move — convert the log statement into its exponential equivalent, which unlocks the inside. One reversal, and the hidden variable steps out.