21) Calcule as expressões:
![21 Calcule As Expressões class=](https://pt-static.z-dn.net/files/d1c/47c170e99b323c0b9f2a0e23b2a262f8.png)
Resposta:
[tex]1\frac{4}{5} + \frac{7}{10} [/tex]
[tex] = \frac{9}{5} + \frac{7}{10} [/tex]
[tex] = \frac{18}{10} + \frac{7}{10} [/tex]
[tex] = \frac{25}{10} [/tex]
[tex] = \frac{5}{2} [/tex]
[tex] = 2 \frac{1}{2} [/tex]
C
Explicação passo-a-passo:
masa gtu aja gbisa sii, kmu kn udh gede