Question 2,3 please thanks

Using the grammar below:

begin end

| ;

=

A | B | C

+

|

|

1) show a leftmost derivation for each of the statements below:

(1) begin A=A-B; B=C; C=A end

(2) begin A=B+C; C=C+B end

2) repeat a rightmost derivation for each of the statements above.