# JavaScript: Check whether it is possible to replace $ in a specified expression

## JavaScript Basic: Exercise-89 with Solution

Write a JavaScript program to check whether it is possible to replace $ in a given expression x $ y = z with one of the four signs +, -, * or / to obtain a correct expression.

For example x = 10, y = 30 and z = 300, we can replace $ with a multiple operator (*) to obtain x * y = z

**Visual Presentation:**

**Sample Solution: **

**JavaScript Code:**

```
// Function to check if there is an arithmetic expression (addition, multiplication, division, or subtraction) among three numbers
function check_arithmetic_Expression(x, y, z) {
// Check if any of the arithmetic expressions holds true
return x + y == z || x * y == z || x / y == z || x - y == z;
}
// Examples of using the function
console.log(check_arithmetic_Expression(10, 25, 35)); // true, as 10 + 25 = 35
console.log(check_arithmetic_Expression(10, 25, 250)); // true, as 10 * 25 = 250
console.log(check_arithmetic_Expression(30, 25, 5)); // true, as 30 / 25 = 1.2
console.log(check_arithmetic_Expression(100, 25, 4.0)); // true, as 100 / 25 = 4.0
console.log(check_arithmetic_Expression(100, 25, 25)); // true, as 100 - 25 = 75
```

Output:

true true true true false

**Live Demo: **

See the Pen javascript-basic-exercise-89 by w3resource (@w3resource) on CodePen.

**Flowchart: **

**ES6 Version:**

```
// Function to check if any of the arithmetic expressions (addition, multiplication, division, subtraction) is true
const check_arithmetic_Expression = (x, y, z) => {
// Return true if any of the arithmetic expressions is true
return x + y == z || x * y == z || x / y == z || x - y == z;
};
// Example usage
console.log(check_arithmetic_Expression(10, 25, 35)); // true
console.log(check_arithmetic_Expression(10, 25, 250)); // true
console.log(check_arithmetic_Expression(30, 25, 5)); // true
console.log(check_arithmetic_Expression(100, 25, 4.0)); // true
console.log(check_arithmetic_Expression(100, 25, 25)); // false
```

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