Matemática, perguntado por tomielaraf, 3 meses atrás

ME AJUDEM POR FAVOR

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Anexos:

Soluções para a tarefa

Respondido por simonesantosaraujo91

Resposta:

- 61/30

$\frac{ - 7}{3} + \frac{4}{5} - \frac{1}{2} = \\ \frac{ - 7}{3} + \frac{4}{5} - \frac{1}{2} \\ \frac{ - 7 \times10}{3 \times 10} + \frac{4}{5} - \frac{1}{2} \\ \frac{ - 7}{3} + \frac{4}{5} - \frac{1}{2} \\ \frac{ - 7 \times 10}{3 \times 10} + \frac{4 \times 6}{5 \times 6} - \frac{1}{2} \\ \frac{ - 7}{3} + \frac{4}{5} - \frac{1}{2} \\ \frac{ - 7 \times 10}{3 \times 10} + \frac{4 \times 6}{5 \times 6} - \frac{1 \times 15}{2 \times 15} \\ \frac{ - 70}{3 \times 10} + \frac{4 \times 6}{5 \times 6} - \frac{1 \times 15}{2 \times 15} \\ \frac{ - 7 \times 10}{3 \times 10} + \frac{4 \times 6}{5 \times 6} - \frac{1 \times 15}{2 \times 15} \\ \frac{ - 70}{30} + \frac{4 \times 6}{5 \times 6} - \frac{1 \times 15}{2 \times 15} \\ \frac{ - 7 \times 10}{3 \times 10} + \frac{4 \times 6}{5 \times 6} - \frac{1 \times 15}{2 \times 15} \\ \frac{ - 70}{30} + \frac{24}{5 \times 6} - \frac{1 \times 15}{2 \times 15} \\ \frac{ - 7 \times 10}{3 \times 10} + \frac{4 \times 6}{5 \times 6} - \frac{1 \times 15}{2 \times15} \\ \frac{ -70}{30} + \frac{24}{30} - \frac{1 \times 15}{2 \times 15} \\ \frac{ - 7 \times 10}{3 \times 10} + \frac{4 \times 6}{5 \times 6} - \frac{1 \times 15}{2 \times 15} \\ \frac{ - 70}{30} + \frac{24}{30} - \frac{15}{2 \times 15} \\ \frac{ - 7 \times 10}{3 \times 10} + \frac{4 \times 6}{5 \times 6} - \frac{1 \times 15}{2 \times 15} \\ \frac{ - 70}{30} + \frac{24}{30} - \frac{15}{30} \\ \frac{ - 70 + 24 - 15}{30} \\ \frac{ - 7}{3} + \frac{4}{5} - \frac{1}{2} \\ \frac{ - 70 + 24 - 15}{30} \\ - 70 + 24 - 15 \\ - 85 + 24 \\ - 61 \\ \frac{70 + 24 - 15}{30} \\ \frac{ - 61}{30} \\ - \frac{61}{30} \\ resposta \\ \frac{61}{30}$