void setup(){
size(400,250);
background(111);
Fraction f = new Fraction(2,7);
Fraction g = new Fraction(4,9);
f.add(3);
text("="+f.toString(),195,140);
}
class Fraction{
int n;
int d;
Fraction(int a,int b){
n = a; //this.n = a
d = b;
}
void add(int z){
text(this.n+"/"+this.d,195,100);
text(z,195,120);
this.n = this.d*z+this.n;
}
String toString(){
String s = this.n+"/"+this.d;
return s;
}
void reciprocal(){
int temp;
temp = n;
n = d;
d = temp;
}
}
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