By interchanging the given two signs, which of the following equations will NOT be correct?

+ and $$\times$$
I. $$180 - 32 + 3 \times 148 \div 37 = 88$$
II. $$204 \div 17 \times 23 + 5 - 97 = 50$$

I. $$180 - 32 + 3 \times 148 \div 37 = 88$$

Interchange + and $$\times$$.
$$180 - 32 \times 3 + 148 \div 37 = 88$$

$$180 - 96 + 4 = 88$$

88 = 88

So the given equation is correct.

II. $$204 \div 17 \times 23 + 5 - 97 = 50$$

Interchange + and $$\times$$.

$$204 \div 17 + 23 \times 5 - 97 = 50$$

$$12 + 115 - 97 = 50$$

$$30\ne\ 50$$

So the given equation is not correct.

Hence we can say that eq.(II) is not correct.