Issolvi 15-[7-(21/4+17/8)]

$$15 - [ 7 - ( 2 \frac { 1 } { 4 } + 1 \frac { 7 } { 8 } ) ]$$

Evalwa

$$\frac{97}{8}=12.125$$

Passi tas-Soluzzjonijiet

Immultiplika 2 u 4 biex tikseb 8.

$$15-\left(7-\left(\frac{8+1}{4}+\frac{1\times 8+7}{8}\right)\right)$$

Żid 8 u 1 biex tikseb 9.

$$15-\left(7-\left(\frac{9}{4}+\frac{1\times 8+7}{8}\right)\right)$$

Immultiplika 1 u 8 biex tikseb 8.

$$15-\left(7-\left(\frac{9}{4}+\frac{8+7}{8}\right)\right)$$

Żid 8 u 7 biex tikseb 15.

$$15-\left(7-\left(\frac{9}{4}+\frac{15}{8}\right)\right)$$

L-inqas multipli komuni ta' 4 u 8 huwa 8. Ikkonverti \frac{9}{4} u \frac{15}{8} fi frazzjonijiet bid-denominatur 8.

$$15-\left(7-\left(\frac{18}{8}+\frac{15}{8}\right)\right)$$

Billi \frac{18}{8} u \frac{15}{8} għandhom l-istess denominatur, żidhom billi żżid in-numeraturi tagħhom.

$$15-\left(7-\frac{18+15}{8}\right)$$

Żid 18 u 15 biex tikseb 33.

$$15-\left(7-\frac{33}{8}\right)$$

Ikkonverti 7 fi frazzjoni \frac{56}{8}.

$$15-\left(\frac{56}{8}-\frac{33}{8}\right)$$

Billi \frac{56}{8} u \frac{33}{8} għandhom l-istess denominatur, naqqashom billi tnaqqas in-numeraturi tagħhom.

$$15-\frac{56-33}{8}$$

Naqqas 33 minn 56 biex tikseb 23.

$$15-\frac{23}{8}$$

Ikkonverti 15 fi frazzjoni \frac{120}{8}.

$$\frac{120}{8}-\frac{23}{8}$$

Billi \frac{120}{8} u \frac{23}{8} għandhom l-istess denominatur, naqqashom billi tnaqqas in-numeraturi tagħhom.

$$\frac{120-23}{8}$$

Naqqas 23 minn 120 biex tikseb 97.

$$\frac{97}{8}$$

Fattur

$$\frac{97}{2 ^ {3}} = 12\frac{1}{8} = 12.125$$