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$a\div b = \dfrac{a}{b}$

Theory

$a \div b = \frac{a}{b}$

There are several notations for division, and switching between them can, in some cases, clarify the expression or equation. The sign $\div$ can, for example, be substituted for a fraction line. $3 \div 4 = \frac{3}{4} x \div 68 = \frac{x}{6 8}$