Question

Найдите значение выражения а) 3/2+(2 1/4- 1 1/2), б) 2,6- 1 2/7 Заранее спасибо!

Answer 1

А) 3/2+(2 1/4- 1 1/2), = 3/2 + (2 1/4 - 1 2/4) = 3/2 + (1 5/4 - 1 2/4) = 3/2 + 3/4 = 6/4 + 3/4 = 9/4 = 2 1/4
б) 2,6- 1 2/7 = 2 6/10 - 1 2/7 = 2 3/5 - 1 2/7 = 2 21/35 - 1 10/35 = 1 11/35

Answer 2

А) 3/2+(2 1/4- 1 1/2)= $\frac{3}{2} +( \frac{9}{4} - \frac{3}{2}) = \frac{3}{2} +( \frac{9}{4} - \frac{6}{4}) = \frac{6}{4} + \frac{3}{4} = \frac{9}{4} = 2 \frac{1}{4}$
б) 2,6- 1 2/7 = $\frac{26}{10} - \frac{9}{7}$=$\frac{182}{70} - \frac{90}{70} = \frac{92}{70} = \frac{46}{35} = 1 \frac{11}{35}$