Question

(1/2-5/2).(9/4+8/5)

(-7/4)+(-3/2)-5/6+3

alguém pode responder essas contas, não precisa da explicação​

Answer 1

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1-

$( \frac{1}{2} - \frac{5}{2} ) \times ( \frac{9}{4} + \frac{8}{5} ) \\ \\ - 2( \frac{9}{4} + \frac{8}{5} ) \\ \\ - 2 \times \frac{77}{20} \\ \\ - \frac{77}{10}$

2-

$( - \frac{7}{4} ) + ( - \frac{3}{2} ) - \frac{5}{6} + 3 \\ \\ - \frac{7}{4} + ( - \frac{3}{2} ) - \frac{5}{6} + 3 \\ \\ - \frac{7}{4} - \frac{3}{2} - \frac{5}{6} + 3 \\ \\ \frac{ - 21 - 18 - 10 + 36}{12} \\ \\ \frac{ - 13}{12} \\ \\ - \frac{13}{12}$

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