Question

I know this is really simple, but I seem to have forgotten how to do this problem.

-1/14-3/5

help please?

Answer 1

the LCD is 14*5 = 70

Answer 2

-1/14-3/5

you need to get every denominator equal to the LCD before you can subtract the fractions


(-1/14)*(5/5)-3/5

-5/70-3/5

-5/70-(3/5)(14/14)

-5/70-42/70

(-5 - 42)/70

-47/70



So -1/14-3/5 = -47/70

Answer 3

Thanks! I have a couple more questions if that's alright?

Answer 4

ok just a few more though

Answer 5

7/8y-5/8=15/4

Answer 6

y is in the denominator?

Answer 7

yeah

Answer 8

oh wait no its \[\frac{ 7 }{ 8} y \]

Answer 9

ok start off by multiplying every fraction by the LCD 8

this will clear out the fractions

Answer 10

7/8y-5/8=15/4

8*((7/8)y)-8(5/8)=8(15/4)

7y - 5 = 2*15

7y - 5 = 30

see what to do from here?

Answer 11

yeah, thanks so much!

Answer 12

I can figure out the others on my own, thanks

Answer 13

ok glad to be of help