Решить . 50 5(8/15)+4(7/12)-3(19/20) ( 36(2/3)+3(1/8) ) - ( 18-10(5/9) )

1) 5/1(8/15)+4(7/12)-3/1(19/20) = 8/3 +7/3 - 27/20 = 15/3 - 27/20 = 5 - 1 7/20 =
=4 20/20 - 1 7/20 = 3 13/20
2) ( 36(2/3)+3(1/8) ) - ( 18-10(5/9) )= 24 +3/8 -(18 - 50/9)=24 +3/8 -18 +50/9=
=24 +3/8 -18 + 5 4/9= 6 + 27/72 + 5 32/72 = 11 59/72