Question

8 1/2-3 1/2 (2 1/2+1 3/4) 2 3/7 решите пожалуйста дам много баллов

Answer 1

2 1/2+1 3/4=2 2/4+1 3/4=4 1/4

3 1/2*4 1/4=7/2*17/4=119/2

119/2*2 3/7=119/2*17/7=289/2=144 1/2

8 1/2-144 1/2=-136

Answer 2

$8 \frac{1}{2} - 3 \frac{1}{2} \times (2 \frac{2}{4} + 1 \frac{3}{4} ) \times 2\frac{3}{7} = \\ \\ = 8 \frac{1}{2} - 3 \frac{1}{2} \times 4 \frac{1}{4} \times 2 \frac{3}{7} = \\ \\ = 8 \frac{1}{2} - \frac{7}{2} \times \frac{17}{4} \times \frac{17}{7} = \\ \\ = 8 \frac{1}{2} - 36.125 = 8.5 - 36.125 = \\ = - 27.625 = - 27 \frac{5}{8}$