Question

УМАЛЯЮ ВЫЧИСЛИТЕ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

(5/18+7/12)*2 10/31+1 13/51:(4/17-20/51)= -6
1)5/18+7/12=10/36+21/36=31/36
2)31/36* 2 10/31=31/36*72/31=2
3)4/17-20/51=12/51-20/51= -8/51
4)1 13/51:(-8/51)= -64/51*51/8= -8
5)2+(-8)= 2-8= -6

Answer 2

(5/18    + 7/12 )  *   2    10/31    +   1   13/51   :  (4/17 -  20/51 ) =
выражением:
= ( 10/36 +  21/36 ) *   72/31     +    64/51   :  ( 12/51  -  20/51 )  =
= 31/36   *    72/31      +      64/51   :   (- 8/51 ) = 
=  2     -       64/51   *    51/8 =  2 -  8   = -6

по действиям:
1) 5/18   + 7/12  = 10/36  +  21/36  = 31/36
2) 4/17  -  20/51  = (4*3 - 20)/51 =  - 8/51
3) 31/36   *  2  10/31 = 31/36   *   72/31 = (1*2)/(1*1) = 2
4)  1  13/51   :  (- 8/51) = 64/51    *  (-  51/8) = - 64/8 = -8
5) 2 + (-8) =  - (8-2) = - 6