To find the improper fraction of a mixed number fraction. You first have to remove the whole number from the fraction (the big one bending the fraction)
Do this by multiplying the denominator (4) by the whole number (1)
4 x 1 = 4
Then add this number with the numerator (top number) which is 3.
4+3 = 7
Seven is our new numerator, our denominator stays the same (4)
So our new improper fraction is: