a)
[tex] \frac{214 - 2}{99} + \frac{06 - 0}{9} = \frac{212}{99} + \frac{6}{9} = \frac{212 + 66}{99} = \frac{278}{99} [/tex]
b)
[tex] \frac{045 - 4}{90} + \frac{023 - 2}{90} = \frac{41}{90} + \frac{21}{90} = \frac{62}{90} [/tex]
c)
[tex] \frac{2124 - 12}{990} + \frac{1315 - 31}{990} = \frac{2112}{990} + \frac{1284}{990} = \frac{3396}{990} [/tex]
Espero ajudar nos estudos❤
