Question

3) - 3 1/2-(5 3/4+2 7/20)
4)-1/3-(-3 7/18-5 8/9)​

Answer 1

$1) \: - 3 \frac{1}{2} - (5 \frac{3}{4} + 2 \frac{7}{20} ) = - 3 \frac{1}{2} - 7 \frac{15 + 7}{20} = - 3 \frac{1}{2} - 8 \frac{1}{10} = - (11 \frac{5 +1}{10} ) = - 11 \frac{3}{5} \\ 2) \: - \frac{1}{3} - ( - 3 \frac{7}{18} - 5 \frac{8}{9} ) = - \frac{1}{3} - ( - (8 \frac{7 + 16}{18} )) = - \frac{1}{3} - ( - 8 \frac{23}{18} ) = - \frac{1}{3} + 9 \frac{5}{18} = 8 \frac{17}{18}$

Answer 2

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