Me ayudan hacer estos ejercicios gracias?

Respuesta : 1.

SUMAa.

<img src="https://tex.z-dn.net/?f=%5Cfrac%7B8%7D%7B7%7D%20%2B%20%5Cfrac%7B13%7D%7B7%7D" /><img src="https://tex.z-dn.net/?f=%5Cfrac%7B8%20%2B%2013%7D%7B7%7D" /><img src="https://tex.z-dn.net/?f=%5Cfrac%7B21%7D%7B7%7D" /><img src="https://tex.z-dn.net/?f=3" />b.

<img src="https://tex.z-dn.net/?f=%5Cfrac%7B18%7D%7B25%7D%20%2B%20%5Cfrac%7B17%7D%7B25%7D" /><img src="https://tex.z-dn.net/?f=%5Cfrac%7B18%20%2B%2017%7D%7B25%7D" /><img src="https://tex.z-dn.net/?f=%5Cfrac%7B35%7D%7B25%7D" /><img src="https://tex.z-dn.net/?f=%5Cfrac%7B7%7D%7B5%7D" />c.

<img src="https://tex.z-dn.net/?f=%5Cfrac%7B9%7D%7B3%7D%20%2B%20%5Cfrac%7B21%7D%7B5%7D" /><img src="https://tex.z-dn.net/?f=3%20%2B%20%5Cfrac%7B21%7D%7B5%7D" />[img = 10][img = 11]d.

[img = 12][img = 13][img = 14][img = 15]2.

RESTAa.

[img = 16][img = 17][img = 18]b.

[img = 19][img = 20][img = 21]c.

[img = 22][img = 23][img = 24][img = 25]3.

OPERAa.

[img = 26][img = 27][img = 28]b.

[img = 29][img = 30][img = 31]c.

[img = 32][img = 33][img = 34][img = 35]d.

[img = 36][img = 37][img = 38]e.

[img = 39][img = 40][img = 41]f.

[img = 42][img = 43][img = 44][img = 45].