-2 over three + -4 over 5

2 answers

Okay
Times the demominators 5 and 3 = 15

What do i time 3 by to get 15 = 5

so -2/3 becomes -10/15

What do I times 5 by to get 15 =3

so -4/5 becomes -12/15

Now I have -10/15 + -12/15 = -22/15

Can't be simplified so the answer is

-22/15 or -1 and 7/15

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secondteacher
Is this what you are trying to say ?

-2 over three + -4 over 5
= (-2/3) + (-4/5)
= (-2/3)*(5/5) + (-4/5)*(3/3)
= (-10/15) + (-12/15)
= -22/15

I hope on "your" homework-help website you explain things more clearly.

( I checked it out. If it is "free", why does one have to register ?)