E=(20!+21!+22!)/(20!+21!)

Lösung

E = \frac{20 ! + 21 ! + 22 !}{20 ! + 21 !}

E = \frac{1.17752 E 21}{5.35238 E 19}

Dezimale

E = 22

Schritte zur Lösung

E = \frac{20 ! + 21 ! + 22 !}{20 ! + 21 !}

Vereinfache

\frac{20 ! + 21 ! + 22 !}{20 ! + 21 !} : \frac{1.17752 E 21}{5.35238 E 19}

E = \frac{1.17752 E 21}{5.35238 E 19}

so l v e f or x, 2 y - x - 2 = 0

so l v e f or y, 3 x + 1 + 2 y = 2 y + 2 - 3 x

\frac{x}{2} + 3 = - 2

so l v e f or x, 8 x = 3 y

3 y + 6 = 30 + 2 y