First, let's simplify the expression inside the parentheses before multiplying by 4 2/7.
3 x (2 x 5 5/6 - 15.4) = 3 x (10 5/6 - 15.4= 3 x (10 + 5/6 - 15.4= 3 x (10 + 5/6 - 92/5= 3 x (10 + 5/6 - 92/5= 3 x (60/6 + 5/6 - 92/6= 3 x (-27/6= -81/= -13.5
Now, multiply -13.5 by 4 2/7:
-13.5 x 4 2/7 = -13.5 x 30/= (-135/10) x 30/= -405/7= -5.7857
Therefore, the final result is -5.7857.
First, let's simplify the expression inside the parentheses before multiplying by 4 2/7.
3 x (2 x 5 5/6 - 15.4) = 3 x (10 5/6 - 15.4
= 3 x (10 + 5/6 - 15.4
= 3 x (10 + 5/6 - 92/5
= 3 x (10 + 5/6 - 92/5
= 3 x (60/6 + 5/6 - 92/6
= 3 x (-27/6
= -81/
= -13.5
Now, multiply -13.5 by 4 2/7:
-13.5 x 4 2/7 = -13.5 x 30/
= (-135/10) x 30/
= -405/7
= -5.7857
Therefore, the final result is -5.7857.