By interchanging the given two signs which of the following equation will be incorrect?
÷ and +

Option (a) 12$$\div$$9$$\times$$31+3=105

$$12+9\times31\div3=105$$

$$12+9\times\frac{31}{3}=105$$

$$12+3\times31=105$$

12+93 = 105

105 = 105

The given equation is correct.

Option (b) 7$$\times$$16+4$$\div$$5=33

$$7\times16\div4+5=33$$

$$7\times4+5=33$$

$$28+5=33$$

33 = 33

The given equation is correct.

Option (c) 9$$\div$$11$$+11\times$$2=9

$$9+11\div11\times2=9$$

$$9+1\times2=9$$

$$11\ne\ 9$$

The given equation is not correct.

Option (d) 6$$\times$$11+2$$\div$$5=38

$$6\times11\div2+5=38$$

$$6\times\frac{11}{2}+5=38$$

$$3\times11+5=38$$

33+5 = 38

38 = 38

The given equation is correct.