Resposta:
- 61/30
[tex]b + \frac{ - 7}{3} + \frac{4}{5} - \frac{1}{2} = \\ b + \frac{ - 7}{3} + \frac{4}{5} - \frac{1}{2} \\ \frac{ - 7}{3} + \frac{4}{5} - \frac{1}{2} \\ - 70 + 24 - 15 \\ \frac{ - 61}{30} \\ - \frac{61}{30} \\ b + \frac{ - 7}{3} + \frac{4}{5} - \frac{1}{2} \\ b - \frac{61}{30} \\ resposta \\ b - \frac{61}{30} [/tex]
Explicação passo-a-passo:
b+ -7/3 + 4/5 - 1/2
b+ -7/3 + 4/5 - 1/2
-7/3 + 4/5 - 1/2
-70+24-15
-61/30
- 61/30
b+ -7/3 + 4/5 - 1/2
b- 61/30
Resposta
b- 61/30
