What is 1/3 minus 7/18 in fraction?
1/3 minus 7/18 equals to -1/18 in fraction form.
1/3 - 7/18 in fraction form
Learn how to find what is 1/3 minus 7/18 in fraction form just in a few minutes. We have covered the easiest method to write 1/3 - 7/18 as a fraction and decimal.
Summary: 1/3 minus 7/18
Since both the fractions have the unequal denominators, you have to find the equivalent fractions for 1/3 and 7/18 having identical denominators before starting adding the fractions. Find the LCM of denominators, 18 is the LCM of 3 and 18. Multiply the LCM 18 with all the numerators and denominators of both fractions (1/3 x 18/18) - (7/18 x 18/18) and simplify further in order to have the common denominators. By simplifying the fraction subtraction expression becomes -1/18.
1/3-7/18 as a fraction
1/3 - 7/18 = (?)
1/3 - 7/18 = [(1 x 18) - (7 x 3)]/(3 x 18)
= (18 - 21)/54
= -3/54
= (3 x -1)/(3 x 18)
= -1/18
1/3 - 7/18 = -1/18
1/3 minus 7/18 as a fraction is -1/18.
where
1/3 is a fraction as a minuend,
7/18 is a fraction as a subtrahend,
-1/18 is the difference between 1/3 and 7/18.
1/3 minus 7/18 as a decimal
1/3 - 7/18 = -1/18
-1/18 = -0.0556
1/3-7/18 as a decimal is -0.0556
where
-0.0556 is the difference between 1/3 and 7/18.
How to find 1/3-7/18 as a fraction?
The below workout with step by step calculation shows how to find what is the difference between two fractions by subtracting a fraction 7/18 from 1/3. For different, unequal or unlike denominators, use any one of the following methods to find the equivalent fraction for 1/3 minus 7/18.
1. LCM method
2. Cross multiplication method.
1/3-7/18 using LCM Method:
What is 1/3 minus 7/18 as a fraction?
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 1/3
Fraction B: 7/18
What to be found?
1/3-7/18 = ?
Find what's the difference between 1/3 and 7/18.
step 2 Compare the denominators of fractions 1/3 and 7/18 to identify whether it is a like or unlike fraction subtraction. Since the denominators of given fractions 1/3 and 7/18 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 1/3 and 7/18:
The LCM of 3 and 18 is 18.
step 4 Write the fractions 1/3 and 7/18 in the subtraction expression form and multiply LCM with all the numerators and denominators of both fractions.
=1/3-7/18
=(1 x 18)/(3 x 18)-(7 x 18)/(18 x 18)
step 5 Simplify the expression to have common denominator:
=6/18-7/18
step 6 Take the common values out and rewrite the above expression like the below:
=1/18 x (6/1-7/1)
=1/18 x (6 - 7)
step 7Simplify the above expression further:
=1/18 x -1
=-1/18
1/3-7/18=-1/18
Hence,
1/3 minus 7/18 equals to -1/18 in fraction.
1/3-7/18 using Cross Multiplication Method:
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 1/3
Fraction B: 7/18
What to be found?
1/3-7/18 = ?
Find what's the difference between 1/3 and 7/18.
step 2 Find the product of numerator of Fraction A and denominator of Fraction B (1 x 18), find the product of numerator of Fraction B and denominator of Fraction A (7 x 3), and find the product of both denominators of Fraction A and Fraction B (3 x 18) and rewrite the equation as like the below:
= (1 x 18) - (7 x 3)/(3 x 18)
step 3 Simplify and rewrite the fraction:
= (18 - 21)/54
= -3/54
= -1/18
1/3-7/18 = -1/18
Hence,
1/3 minus 7/18 = -1/18