2006-08-27 15:49:45 · 10 answers · asked by ♥ 5 in Science & Mathematics ➔ Mathematics
(-126 + 42)/105 = -84/105 = -0.8
2006-08-27 15:53:00 · answer #1 · answered by Will 6 · 3⤊ 0⤋
GCD(42, 105) = 21, and so:
42/105 = 21*2/(21*5) = 2/5
Hence:
-6/5 + 42/105
= -6/5 + 2/5
= -4/5
2006-08-31 15:49:30 · answer #2 · answered by K Sengupta 4 · 0⤊ 0⤋
-6/5+42/105= -126/105+42/105= -84/105
2006-08-28 00:22:15 · answer #3 · answered by MARTA SUSANA L 3 · 0⤊ 0⤋
WHENEVER you're adding/subtracting fractions, use any common denominator...
(21/21)-6/5 + 42/105 =
-126/105 + 42/105 =
-84/105 =
-4/5
2006-08-27 23:03:04 · answer #4 · answered by KnowhereMan 6 · 0⤊ 1⤋
42 and 105 are both divisible by 21.
42 divided by 21 is 2.
105 divided by 21 is 5.
42/105 = 2/5
-6/5 + 2/5 = (-6+2)/5 = -4/5
2006-08-27 23:02:31 · answer #5 · answered by MsMath 7 · 0⤊ 0⤋
-84/105 = -4/5 or -0.8
2006-08-28 00:56:49 · answer #6 · answered by CSUFGrad2006 5 · 0⤊ 0⤋
http://www.google.com/search?hl=en&q=-6%2F5+%2B+42%2F105&btnG=Google+Search
Throw it into google...
2006-08-27 22:54:46 · answer #7 · answered by tbom_01 4 · 0⤊ 1⤋
you name is Mr. Math and you're asking this?
2006-08-27 22:54:02 · answer #8 · answered by s_e_e 4 · 0⤊ 1⤋
-0.8
2006-08-27 22:56:04 · answer #9 · answered by Anonymous · 0⤊ 1⤋
-0.8
2006-08-27 22:55:13 · answer #10 · answered by Green Eggs, No Ham 4 · 0⤊ 1⤋