can someone give me a refresh on how to add,subtract,multiply and divide fractions,

Question

anonymous · Answer

Sure, adding first, to add fractions they have to have the same denominatore Ex. 1/4 + 2/5 you cant add at its state but if you make it  5/20 + 8/20 you can add it

anonymous · Answer

ahh ok gotcha and then what if the answer to this problem is a whole number? just reviewing what I can remember from a college test called the pert I have to retake

anonymous · Answer

i feel so dumb with the little things i forgot

anonymous · Answer

you mean like 20/20 or do you mean like 23/20?

anonymous · Answer

like in the question i remember it had me add to fractions but the answers where whole numbers

anonymous · Answer

so like 1 and 1/3?

ranga · Answer

Two fractions can add to become a whole number: 1/5 + 4/5 = 5/5 = 1

anonymous · Answer

i think i get it mainly i just forgot you had to find a common denominator when adding ok and subtracting?

anonymous · Answer

ok
anything else?

anonymous · Answer

yes what do i do when subtracting is it the same thing?

ranga · Answer

subtraction: same rule as addition. find common denominator.

anonymous · Answer

ok and multiply you switch and add correct?

anonymous · Answer

Yup :P thx ranga

ranga · Answer

multiplication: multiply numerator and leave it on top.  multiply denominator leave it at bottom. simplify.

the_fizicx99 · Answer

Multiplication and division don't require the same denominator

anonymous · Answer

so i just multiply straight across?

ranga · Answer

yes.
division.  flip the bottom and multiply.

anonymous · Answer

ok flip the bottom on both ? and multiply straight across?

anonymous · Answer

for division

the_fizicx99 · Answer

For division; keep the first fraction, switch the division into a multiplication sign and switch the second fraction. (recipricol)

the_fizicx99 · Answer

Flip*

ranga · Answer

no.  a/b divide by c/d = a/b * d/c = ad/bc

the_fizicx99 · Answer

Yes like @ranga said :D

anonymous · Answer

ahh ok so i keep first one flip second one and multiply for dividing fracrtions?

the_fizicx99 · Answer

Yes

anonymous · Answer

and multiply i just multiply straight across?

the_fizicx99 · Answer

Yup

ranga · Answer

yes.  2/3 * 5/6 = (2*5) / (3*6) = 10/18 = 5/9

anonymous · Answer

ok sweet i wish i could give both medal but i do have a couple more questions so look out for them if you know thank you so much guys:)

ranga · Answer

yw.

the_fizicx99 · Answer

Np. Gl

anonymous · Answer

you just ask it here if you l try to help

anonymous · Answer

*you can just typt here if you want ill try to help