Question

Za obydwa daję naj. Z góry dzięki (załącznik).

Answer 1

A) (4/3+5/3 *12/10)*5/3-(7/4*8/9-7/3*4/21)-4/5=  (4/3+2)*5/3 - (14/9-4/9)-4/5 =
         (35/6-13/2)*3/10                                          (35/6-39/6)*3/10


= 10/3*5/3-10/9-4/5 = 50/9-10/9-4/5  = 40/9-4/5  = 200/45-36/45  = 18  2/9
     4/6*3/10                       1/5                1/5             1/5


b)  (10-5/2)*10/15-7/4*(16/7-41/7) = 15/2*10/15-7/4*(-25/7)  =45/4*16/9=20
              9/4*(5/2-9/4)                              9/4*1/4