Its 35! I hope that helped!!
think of it like math. In a basic math equation you have4x5=20in a more advanced one you will get things like these4(5x7)=1404x(5x7)5x7=354x35=140so in chemistry it is the same logicK4Fe(CN)6 + 6 H2SO4 + 6 H2O -> 2 K2SO4 + FeSO4 + 3 (NH4)2SO4 + 6 COso just do the outside equation after the initial parenthesis equations.
5-(5x7) 5-(35) =-30
No. 5x7 is 35.
5x7 in the front and 5x7 in the back.