Issolvi 3-11/12div21/21

$$3 - \frac { 11 } { 12 } \div 2 \frac { 1 } { 21 }$$

Evalwa

$$\frac{439}{172}\approx 2.552325581$$

Passi tas-Soluzzjonijiet

Iddividi \frac{11}{12} b'\frac{2\times 21+1}{21} billi timmultiplika \frac{11}{12} bir-reċiproku ta' \frac{2\times 21+1}{21}.

$$3-\frac{11\times 21}{12\left(2\times 21+1\right)}$$

Annulla 3 fin-numeratur u d-denominatur.

$$3-\frac{7\times 11}{4\left(1+2\times 21\right)}$$

Immultiplika 7 u 11 biex tikseb 77.

$$3-\frac{77}{4\left(1+2\times 21\right)}$$

Immultiplika 2 u 21 biex tikseb 42.

$$3-\frac{77}{4\left(1+42\right)}$$

Żid 1 u 42 biex tikseb 43.

$$3-\frac{77}{4\times 43}$$

Immultiplika 4 u 43 biex tikseb 172.

$$3-\frac{77}{172}$$

Ikkonverti 3 fi frazzjoni \frac{516}{172}.

$$\frac{516}{172}-\frac{77}{172}$$

Billi \frac{516}{172} u \frac{77}{172} għandhom l-istess denominatur, naqqashom billi tnaqqas in-numeraturi tagħhom.

$$\frac{516-77}{172}$$

Naqqas 77 minn 516 biex tikseb 439.

$$\frac{439}{172}$$

Fattur

$$\frac{439}{2 ^ {2} \cdot 43} = 2\frac{95}{172} = 2.552325581395349$$