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7/10 - 3/15 = 15/30 = 1/2
Why?
You need to find the LCD (least common denominator) which is 30. Look at the work below. You must keep in mind that whatever you do to the denominator, you must do to the numerator.
7/ time 3 = 21/
10 time 3 = 30
- 3/ time 2 = 6/
15 time 2 = -30
21 - 6 = 15= 15/30 = 1/2
7/10 - 3/15 = ?
Since 3/15 can be easily reduced to 1/5, we have:
7/10 - 1/5 = ?
Then, we find the LCD of 5 and 10, which is 10, by multiplying 2 to the numerator and denominator of 1/5:
7/10 - 2/10 = 5/10 = 1/2.
Another method includes using the basic fraction and finding the LCD:
7/10 - 3/15 = ?
The LCD (LCM) is 10/5 * 15/5 * 5 = 2 * 3 * 5 = 30. Thus, multiply 3 to the numerator and denominator in 7/10, and 2 to 3/15 in the same fashion.
21/30 - 6/30 = 15/30 = 1/2.
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What is 11 over 15 subtracted by 3 over 10?
11/15 minus 3/10 = 13/30
What is 4 over 5 minus 2 over 3?
12/15 - 10/15 = 2/15
What is 3 over 10 minus 11 over 15?
3/10 - 11/15= 9/30 - 22/30 = -13/30
Whats 5 over 6 minus 3 over 10 equal?
5/6 − 3/10 = 8/15
What is 2 over 5 minus 1 over 10?
2/5 − 1/10 = 15/50 which reduces to 3/10
What is 11 over 15 subtracted by 3 over 10?
11/15 minus 3/10 = 13/30
What is the fraction 11 over 15 minus 3 over 10?
11/15 − 3/10 = 13/30
What is 2 over 3 minus 1 over 5?
10/15 - 3/15 = 7/15
What is 4 over 5 minus 2 over 3?
12/15 - 10/15 = 2/15
What is 3 over 10 minus 11 over 15?
3/10 - 11/15= 9/30 - 22/30 = -13/30
Whats 5 over 6 minus 3 over 10 equal?
5/6 − 3/10 = 8/15
What is 2 over 3 minus 12 over 15?
2/3 minus 12/15 is -2/15
What is 3 over 2 minus 7 over 10?
3/2 - 7/10 = 15/10 - 7/10 = 8/10 = 4/5
What is 2 over 5 minus 1 over 10?
2/5 − 1/10 = 15/50 which reduces to 3/10
What is 3 over 5 minis 3 over 10?
3/5 minus 3/10 is the same as 6/10 minus 3/10 = 3/10
What is the simplest form of 9 over 10 minus 3 over 5?
9/10 minus 3/5 is 3/10
What is 11 over 15 minus 3 over 15?
11/15 - 3/15 = 8/15
