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9. Add two rules to the following EBNF grammar, one for subtraction, one for division. (Please re- write the entire modified EBNF grammar below): expr
9. Add two rules to the following EBNF grammar, one for subtraction, one for division. (Please re- write the entire modified EBNF grammar below): expr term { + term} term exponent { * exponent } exponent factor {^factor} factor (expr ) number number digit { digit } digit 0|1|2|3|4|5|67| 8 | 9
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