Final answer:
To find a value that should be subtracted from 3/20 to arrive at 27/100, we calculate 3/20 - 27/100. This yields -0.12, indicating that -0.12 should be subtracted from 3/20 to obtain 27/100.
Step-by-step explanation:
In mathematics, when we are asked to find a value that should be subtracted from one fraction to obtain another, we must perform a subtraction operation between fractions. The question here is what should be subtracted from 3/20 to get 27/100? We can set up this equation as follows: 3/20 - x = 27/100.
First, simplify both fractions to a common denominator (since subtraction is easier when fractions have matching denominators). For this question, the common denominator would be 100, so we rewrite 3/20 as 15/100. So now our equation is 15/100 - x = 27/100.
To solve for x, we subtract 27/100 from both sides of the equation. Doing so gives us -12/100 = x. If we simplify this fraction further, we find x = -0.12 (to keep the number positive, ignore the negative sign).
Therefore, -0.12 should be subtracted from 3/20 to get 27/100.
Learn more about Subtraction Between Fractions