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am uitat cum se fac acestea ​

Am Uitat Cum Se Fac Acestea class=

Răspuns :

Ale4848

In cazul in care ai accelasi numitor aduni sau scazi numaratorii si numitorul ramane cel comun

2 supra 7 +3 supra 7 =5 supra 7

3 supra 8 +4 supra 8 =7 supra 8

3 supra 4 + 1 supra 4 =4 Supra 4

10 supra 10+2 supra 10 =12 supra 10

8 supra 9-2 supra 9 -3 supra 9=3 supra 9

Targoviste44

[tex]\it \dfrac{2}{7}+\dfrac{3}{7}=\dfrac{2+3}{7}=\dfrac{5}{7}\\ \\ \\ \dfrac{3}{8}+\dfrac{4}{8}=\dfrac{3+4}{8}=\dfrac{7}{8}\\ \\ \\\dfrac{3}{4}+\dfrac{1}{4}=\dfrac{3+1}{4}=\dfrac{4}{4}=1\\ \\ \\ \dfrac{8}{9}-\dfrac{2}{9}-\dfrac{3}{9}=\dfrac{8-2-3}{9}=\dfrac{\ 3^{(3}}{9}=\dfrac{1}{3}\\ \\ \\ 1+\dfrac{3}{5}=\dfrac{5}{5}+\dfrac{3}{5}=\dfrac{8}{5}=1\dfrac{3}{5}\\ \\ \\ 1-\dfrac{4}{6}=\dfrac{6}{6}-\dfrac{4}{6}=\dfrac{\ 2^{(2}}{6}=\dfrac{1}{3}[/tex]

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