Step-by-step explanation: To find 2 fractions that are equivalent to 4/10, we either multiply or divide the numerator and denominator by the same number.
Notice however that 4/10 is not in lowest terms so we need to divide the numerator and the denominator by the greatest common factor of 4 and 10 which is 2. So if we divide the numerator and the denominator by 2, we get 2/5 so 1 fraction equivalent to 4/10 is 2/5.
If we multiply both the numerator and denominator of 4/10 by 512, we get the equivalent fraction 2048/5120. So this is another equivalent fraction.
It's important to understand that you can choose any number you want to multiply by as long as you do it to both the top and bottom.