Maths: Strings and Numbers

Maths: Strings and Numbers

x1 = "1";   // this is a stringy1 = "2";   // this is a stringx1+y1 = z;  // z = "12";x2 = 1;     // this is a numbery2 = 2;     // this is a numberz2 = x2+y2; // z = 3;
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