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3/5-1/4
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using subtraction
7/20
12/20 -5/20 = 7/20
can you show me the operation for this answer
well u need to find lcd least common denominator
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which is 20
20right?
yep
so 3*4=12 1*5=5 5*4=20 4*5 =20
so 12 -5 = 7 7/20 dont froget medal
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ok thx
for this problem 7/8-2/7 would the denominator be 28 or 48 ?
The LCD of 7/8 and 2/7 would be 56.
would it be 14/56
can you explain this operation
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nope
it would be 49- 16
so 33 / 56
err 7/8 = 49/56 2/7 = 16/56 Therefore 7/8 - 2/7 would be 49/56 - 16/56
these steps would also work for 1/2- 1/3
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