Question

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Answer 1

-3.8 - 5.7 = -9.5
-8.4 + 3.7 = -4.7

$- frac{2}{9} + frac{5}{6} = - frac{11}{18}$

3.9 - 8.4 = -4.5
-2.9 + 7.3 = 4.4

$-1 frac{3}{4} - 2 frac{1}{12} = - frac{7}{4} - frac{25}{12} = - frac{3*7}{3*4} - frac{25}{12} = frac{-21-25}{12} = - frac{46}{12} = -3 frac{10}{12} = -3 frac{5}{6}$