What is 1/2 minus 3? 1/2 - 3 as a fraction provides the detailed information about what is the difference between 1/2 and 3 in fraction and decimal form, and the answer with steps to understand how it is being calculated by using different methods.

1/2-3 equals to
1/2 - 3 = -5/2
Hence, 1/2 - 3 is equal to -5/2.
where
1/2 is a fraction as a minuend,
3 is a fraction as a subtrahend,
-5/2 is the difference between 1/2 and 3.

1/2 minus 3 as a decimal
1/2 - 3 = -5/2
-5/2 = -2.5
Hence, 1/2-3 can be written as -2.5 in decimal.
where
-2.5 is the difference between 1/2 and 3.

For values other than 1/2 minus 3, use this below tool:

How-to: 1/2 - 3 = ?

The below workout with step by step calculation for subtracting 1/2 from 3 shows how to find what is the difference between 1/2 and 3. The difference of fractions 1/2 minus 3 can be obtained by using anyone of the two methods below:
1. LCM method,
2. Cross multiplication method.

Problem and Workout - LCM Method:
What is 1/2 minus 3 as a fraction?

step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 1/2
Fraction B: 3/1

What to be found?
1/2-3 = ?
Find what's the difference between 1/2 and 3.

step 2 Compare the denominators of fractions 1/2 and 3 to identify whether it is a like or unlike fraction subtraction. Since the denominators of given fractions 1/2 and 3 are not equal, it is said to be unlike fractions subtraction.

step 3For unlike fractions subtraction, find the LCM (least common multiple) of both denominators of fractions 1/2 and 3:
The LCM of 2 and 1 is 2.

step 4 Write the fractions 1/2 and 3 in the subtraction expression form and multiply LCM with all the numerators and denominators of both fractions.
=1/2-3
=(1 x 2)/(2 x 2)-(3 x 2)/(1 x 2)

step 5 Simplify the expression to have common denominator:
=1/2-6/2

step 6 Take the common values out and rewrite the above expression like the below:
=1/2 x (1/1-6/1)
=1/2 x (1 - 6)

step 7Simplify the above expression further:
=1/2 x -5
=-5/2
1/2-3=-5/2

Hence,
1/2 minus 3 equals to -5/2 in fraction.

Problem and Workout - Cross Multiplication Method
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 1/2
Fraction B: 3/1

What to be found?
1/2-3 = ?
Find what's the difference between 1/2 and 3.

step 2 Find the product of numerator of Fraction A and denominator of Fraction B (1 x 1), find the product of numerator of Fraction B and denominator of Fraction A (3 x 2), and find the product of both denominators of Fraction A and Fraction B (2 x 1) and rewrite the equation as like the below:
= (1 x 1) - (3 x 2)/(2 x 1)

step 3 Simplify and rewrite the fraction:
= (1 - 6)/2
1/2-3 = -5/2
Hence,
1/2 minus 3 = -5/2 