Issolvi 9*8-9*15*0.02/900*(1-0.15)

$$\frac { 9 \times 8 - 9 \times 15 \times 0.02 } { 900 \times ( 1 - 0.15 ) }$$

Evalwa

$$\frac{77}{850}\approx 0.090588235$$

Passi tas-Soluzzjonijiet

Immultiplika 9 u 8 biex tikseb 72.

$$\frac{72-9\times 15\times 0.02}{900\left(1-0.15\right)}$$

Immultiplika 9 u 15 biex tikseb 135.

$$\frac{72-135\times 0.02}{900\left(1-0.15\right)}$$

Immultiplika 135 u 0.02 biex tikseb 2.7.

$$\frac{72-2.7}{900\left(1-0.15\right)}$$

Naqqas 2.7 minn 72 biex tikseb 69.3.

$$\frac{69.3}{900\left(1-0.15\right)}$$

Naqqas 0.15 minn 1 biex tikseb 0.85.

$$\frac{69.3}{900\times 0.85}$$

Immultiplika 900 u 0.85 biex tikseb 765.

$$\frac{69.3}{765}$$

Espandi \frac{69.3}{765} billi timmultiplika kemm in-numeratur kif ukoll id-denominatur b'10.

$$\frac{693}{7650}$$

Naqqas il-frazzjoni \frac{693}{7650} għat-termini l-aktar baxxi billi testratta u tikkanċella barra 9.

$$\frac{77}{850}$$

Fattur

$$\frac{7 \cdot 11}{2 \cdot 17 \cdot 5 ^ {2}} = 0.09058823529411765$$