'A+B' means 'A is the brother of B', 'A-B' means 'A is the daughter of B', 'A×B' means 'A is the husband of B' and 'A÷B' means 'A is the son of B'. If the expression is 'J+R÷T×K-Z', then what is the relationship of K to J?

Let's decode the expression 'J+R÷T×K-Z' step by step from left to right:J+R: J is the brother of R ($J[\text{Male}]\to R$).R÷T: R is the son of T ($T\to R[\text{Male}]$). Since J and R are brothers, T is the parent of both J and R.T×K: T is the husband of K ($T[\text{Male}]⟺K[\text{Female}]$). This means T is the father and K is the mother of J and R.K-Z: K is the daughter of Z ($Z\to K[\text{Female}]$).We need to find the relationship of K to J:Since K is married to J's father (T) and is a female, K is the Mother of J.