5+68empty space, 5, plus, 68 =(3+=(3+equals, left parenthesis, 3, plus 5 )+ 68)+68right parenthesis, plus, 68 =3 + (=3+(equals, 3, plus, left parenthesis +68)+68)plus, 68, right parenthesis =3 +=3+equals, 3, plus 70 ==equals 73

Give me and example

Step-by-step explanation:

A mathematical system is a set with one or more binary operations defined on it. – A binary operation is a rule that assigns to 2 elements of a set a unique third element. ▪ If 5 and 7 belong to N and addition is the binary. operation then 12 Is the unique “answer.”