משתמש:Agbad/משוואות

• $\ {\frac {c}{a}}+{\frac {c}{b}}={\frac {a+b}{a\cdot b}}\cdot c$

• $\ {\frac {c}{a}}-{\frac {c}{b}}={\frac {b-a}{a\cdot b}}\cdot c$

• $\ {\frac {b}{a}}-{\frac {a}{b}}={\frac {b-a}{a}}+{\frac {b-a}{b}}$

$\ a\leq b$

• ${\frac {n}{n^{2}}}={\frac {1}{n}}$

• $x\cdot {\frac {y}{z}}=y\cdot {\frac {x}{z}}$