The answer is 6 as if you plug in 6 in the denominator (6)-6 is 0 which makes the fraction undefined
The tip is $2.40 and the bill is$14.40
On the right side, there are
• 2•2 = 4 atoms of Nb
• 2•5 = 10 atoms of O
so among the reactants on the left, the reaction is balanced as
4 Nb + 5 O₂ → 2 Nb₂O₅
Y - 5 = -2x - 4
Add 5 on both sides.
y = -2x + 1
y = -2x + 1 is in simplest form.
