assignment operator

let x = 10;
let y = 5
x += y;
console.log(x)
console.log("=======");

let a = 10;
let b = 5
 
a += b; // artinya -> a = a + b;
a -= b; // artinya -> a = a - b;
a *= b; // artinya -> a = a * b;
a /= b; // artinya -> a = a / b;
a %= b; // artinya -> a = a % b;
 
console.log(a);