Please help!!!!!

- 1/2 - 3/4 =

-2/4 - 3/4 = -5/4 = -1 1/4

Sketch this on a number line !!!!

From 0 go left 1/2

then go left another 3/4
see that you are now at -1 1/4

To subtract fractions, you need to have a common denominator. The common denominator is the least common multiple (LCM) of the denominators. In this case, the denominators are 2 and 4.

To find the LCM, you can list the multiples of each denominator:

Multiples of 2: 2, 4, 6, 8, 10, ...
Multiples of 4: 4, 8, 12, 16, ...

From the lists, you can see that the least common multiple of 2 and 4 is 4.

Now that you have a common denominator, you can subtract the fractions:

1/2 - 3/4 = (1 * 2)/(2 * 2) - (3 * 1)/(4 * 1)
= 2/4 - 3/4

Now that the fractions have the same denominator, you can subtract the numerators:

2/4 - 3/4 = (2 - 3)/4
= -1/4

Therefore, the answer to the subtraction problem 1/2 - 3/4 is -1/4.