Issolvi 18+-18/5--61/10=

$$18 + \frac { - 18 } { 5 } - - 6 \frac { 1 } { 10 } =$$

Evalwa

$$\frac{41}{2}=20.5$$

Passi tas-Soluzzjonijiet

Frazzjoni \frac{-18}{5} tista' tinkiteb mill-ġdid bħala -\frac{18}{5} bl-estrazzjoni tas-sinjal negattiv.

$$18-\frac{18}{5}-\left(-\frac{6\times 10+1}{10}\right)$$

Ikkonverti 18 fi frazzjoni \frac{90}{5}.

$$\frac{90}{5}-\frac{18}{5}-\left(-\frac{6\times 10+1}{10}\right)$$

Billi \frac{90}{5} u \frac{18}{5} għandhom l-istess denominatur, naqqashom billi tnaqqas in-numeraturi tagħhom.

$$\frac{90-18}{5}-\left(-\frac{6\times 10+1}{10}\right)$$

Naqqas 18 minn 90 biex tikseb 72.

$$\frac{72}{5}-\left(-\frac{6\times 10+1}{10}\right)$$

Immultiplika 6 u 10 biex tikseb 60.

$$\frac{72}{5}-\left(-\frac{60+1}{10}\right)$$

Żid 60 u 1 biex tikseb 61.

$$\frac{72}{5}-\left(-\frac{61}{10}\right)$$

L-oppost ta' -\frac{61}{10} huwa \frac{61}{10}.

$$\frac{72}{5}+\frac{61}{10}$$

L-inqas multipli komuni ta' 5 u 10 huwa 10. Ikkonverti \frac{72}{5} u \frac{61}{10} fi frazzjonijiet bid-denominatur 10.

$$\frac{144}{10}+\frac{61}{10}$$

Billi \frac{144}{10} u \frac{61}{10} għandhom l-istess denominatur, żidhom billi żżid in-numeraturi tagħhom.

$$\frac{144+61}{10}$$

Żid 144 u 61 biex tikseb 205.

$$\frac{205}{10}$$

Naqqas il-frazzjoni \frac{205}{10} għat-termini l-aktar baxxi billi testratta u tikkanċella barra 5.

$$\frac{41}{2}$$

Fattur

$$\frac{41}{2} = 20\frac{1}{2} = 20.5$$