Question

30 целых 5/6 - (7 целых 1/3 +2 целых 1/4)*4

Answer 1

1) 22/3+9/4=88/12+27/12=115/12
2)115/12*4=115/3
3)185/6-115/3=185/6-230/6=-45/6=-15/2=-7 1/2

Answer 2

30 5/6-(7 1/3+2 1/4)*4=30 5/6-(7 4/12+ 2 3/12)*4= 30 10/12-(84/12+27/12)*4=30 10/12-(11/12)*4=30 10/12-59/12=(370-59)/12=311/12=25 1/12

Answer 3

спасибо большое