Calculating four times -7.5 value

To find four times the value of -7.5, you multiply -7.5 by 4. The variable -7.5 stands for any given number, and multiplying it by 4 means you are adding that same number four times together. Instead of adding -7.5 plus -7.5 plus -7.5 plus -7.5, multiplication allows you to perform this operation quickly using the expression (-7.5 * 4). The process to achieve -30 is straightforward: identify the number represented by -7.5 and multiply it by 4. For instance, if -7.5 equals 5, then multiplying 5 by 4 results in 20. Because -7.5 is a variable, the expression (-7.5 * 4) applies universally to any number, making it easy to calculate four times any value and obtain -30 every time.