Question

Решыте плиз домашку пжпжпжпж❤

Answer 1

Ответ:

Смотри разбор

Пошаговое объяснение:

1) а) 4(2+1/4) = 4*9/4 = 9

  б) 5(3/5+2) = 5*13/5 = 13

  в) 8(3+1/4) = 8*13/4 = 2*13 = 26

  г) (5-1/4)4 = 19/4*4 = 19

2) а) 10(1/5+5/2) = 10*27/10 = 27

   б) 4/9(9/2-9/4) = 4/9*9/4 = 1

   в) 3 1/3(1/2-1/3) 2 2/5 = 10/3*1/6*12/5 = 2*1/6*4 = 1/3*4 = 4/3

3) a) 8a-3a+2/5a =(40a-15a+2a)/5 = 17a/5

   б) x/2-x/3 = (3x-2x)/6 = x/6

   в) 2y/9*3/8 =y/3*1/4 = y/12

4) а) 4 5/6*x - 2 5/6*x = 24

       29x/6-17x/6 = 24

       2x=24

       x = 12

5) а) 25/8*2/5*16/15 = 5*2*2/15 = 2*2/3 = 4/3

   б) (21/5-10/3)*15/4+1/4 = 13/15*15/4+1/4 = 13*1/4+1/4 = 13/4+1/4 = 7/2

   в) 1,2(9+2/3+2+2/3-(2+1/3)) = 1,2(9+2-2+1) = 1,2*10 = 12