Yes, but only after renaming (or, equivalently, converting to decimal).
No. You can't subtract unlike terms
no, to add and subtract like and unlike fractions the denominator has to be the same,
first find a common denominator then subtract the top numbers
You would have to convert the units to be alike, then you would be able to add and subtract them.
To add and subtract unlike fractions.
what's 8+15=
When you want to add or subtract unlike fractions.
just change the fration with the smallest denominator and add or subtract the way you always do.
To get the right answer when you add or subtract unlike fractions.
Subtract and the Keep the sign of the one that has more
The question is based on a complete misunderstanding of what is required. Unlike denominators are NOT required!
The denominators need to be the same for subtraction. Find the Least Common Denominator for both items and then subtract.