7/9 minus 5/7 as a fraction
7/9 - 5/7 as a fraction provides the detailed information about what is 7/9 minus 5/7 in fraction and decimal form, and the answer with steps to understand how it is being calculated by using different methods.
7/9-5/7 equals to
7/9 - 5/7 = (?)
7/9 - 5/7 = [(7 x 7) - (5 x 9)]/(9 x 7)
= (49 - 45)/63
= 4/63
7/9 - 5/7 = 4/63
7/9 minus 5/7 is equal to 4/63
where
7/9 is a fraction as a minuend,
5/7 is a fraction as a subtrahend,
4/63 is the difference between 7/9 and 5/7.
7/9 minus 5/7 as a decimal
7/9 - 5/7 = 4/63
4/63 = 0.0635
7/9-5/7 as a decimal is 0.0635
where
0.0635 is the difference between 7/9 and 5/7.
How-to: 7/9 - 5/7 = ?
1. LCM method,
2. Cross multiplication method.
Problem and Workout - LCM Method:
What is 7/9 minus 5/7 as a fraction?
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 7/9
Fraction B: 5/7
What to be found?
7/9-5/7 = ?
Find what's the difference between 7/9 and 5/7.
step 2 Compare the denominators of fractions 7/9 and 5/7 to identify whether it is a like or unlike fraction subtraction. Since the denominators of given fractions 7/9 and 5/7 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 7/9 and 5/7:
The LCM of 9 and 7 is 63.
step 4 Write the fractions 7/9 and 5/7 in the subtraction expression form and multiply LCM with all the numerators and denominators of both fractions.
=7/9-5/7
=(7 x 63)/(9 x 63)-(5 x 63)/(7 x 63)
step 5 Simplify the expression to have common denominator:
=49/63-45/63
step 6 Take the common values out and rewrite the above expression like the below:
=1/63 x (49/1-45/1)
=1/63 x (49 - 45)
step 7Simplify the above expression further:
=1/63 x 4
=4/63
7/9-5/7=4/63
Hence,
7/9 minus 5/7 equals to 4/63 in fraction.
Problem and Workout - Cross Multiplication Method
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 7/9
Fraction B: 5/7
What to be found?
7/9-5/7 = ?
Find what's the difference between 7/9 and 5/7.
step 2 Find the product of numerator of Fraction A and denominator of Fraction B (7 x 7), find the product of numerator of Fraction B and denominator of Fraction A (5 x 9), and find the product of both denominators of Fraction A and Fraction B (9 x 7) and rewrite the equation as like the below:
= (7 x 7) - (5 x 9)/(9 x 7)
step 3 Simplify and rewrite the fraction:
= (49 - 45)/63
7/9-5/7 = 4/63
Hence,
7/9 minus 5/7 = 4/63
