+49 a=-1 b=3 c=-4 c/a + c/b - a/b = ???
can anyone explain it to me? i got 7/-1 but i bet its wrong
+33615 (-4/-1) + (-4/3) - (-1/3)
Do the terms I've put in brackets first:
4 - 4/3 + 1/3 because if you divide one negative number by another you get a positive number; a plus followed by a minus is a minus; and a minus followed by a minus is a plus.
Now put every term over a common denominator. Since the last two terms are both over 3, express the first term as 12/3 (since 12/3 = 4).
12/3 - 4/3 + 1/3
Now we can simply write
(12 - 4 + 1)/3 or
9/3 or just 3
+33615 (-4/-1) + (-4/3) - (-1/3)
Do the terms I've put in brackets first:
4 - 4/3 + 1/3 because if you divide one negative number by another you get a positive number; a plus followed by a minus is a minus; and a minus followed by a minus is a plus.
Now put every term over a common denominator. Since the last two terms are both over 3, express the first term as 12/3 (since 12/3 = 4).
12/3 - 4/3 + 1/3
Now we can simply write
(12 - 4 + 1)/3 or
9/3 or just 3
