Lutasin ang 20192019*2018-20182018*2017/20202020*2019-20192019*2018

$$\frac{ 20192019 \times 2018-20182018 \times 2017 }{ 20202020 \times 2019-20192019 \times 2018 }$$

I-evaluate

$$\frac{2018}{2019}\approx 0.999504705$$

Mga Hakbang ng Solution

I-multiply ang 20192019 at 2018 para makuha ang 40747494342.

$$\frac{40747494342-20182018\times 2017}{20202020\times 2019-20192019\times 2018}$$

I-multiply ang 20182018 at 2017 para makuha ang 40707130306.

$$\frac{40747494342-40707130306}{20202020\times 2019-20192019\times 2018}$$

I-subtract ang 40707130306 mula sa 40747494342 para makuha ang 40364036.

$$\frac{40364036}{20202020\times 2019-20192019\times 2018}$$

I-multiply ang 20202020 at 2019 para makuha ang 40787878380.

$$\frac{40364036}{40787878380-20192019\times 2018}$$

I-multiply ang 20192019 at 2018 para makuha ang 40747494342.

$$\frac{40364036}{40787878380-40747494342}$$

I-subtract ang 40747494342 mula sa 40787878380 para makuha ang 40384038.

$$\frac{40364036}{40384038}$$

Bawasan ang fraction \frac{40364036}{40384038} sa pinakamabababang term sa pamamagitan ng pag-extract at pag-cancel out sa 20002.

$$\frac{2018}{2019}$$

I-factor

$$\frac{2 \cdot 1009}{3 \cdot 673} = 0.9995047052996533$$