2007-02-14 00:57:54 · 6 answers · asked by dallen3330 1 in Science & Mathematics ➔ Mathematics
- 3k + 7 - (- 9k) + (-16) - k = 0
- 3k + 7 + 9k - 16 - k = 0
- 3k + 9k - k + 7 - 16 = 0
5k - 9 = 0
5k - 9 + 9 = 0 + 9
5k = 9
5k/5 = 9/5
k = 9/5
k = 1 4/5
k = 1.8
- - - - - - - -s-
2007-02-14 03:08:53 · answer #1 · answered by SAMUEL D 7 · 1⤊ 0⤋
Use distributive property:
-3k+7+9k-16-k
For simplifying:
-3k-k+9k+7-16
5k-9
To solve:
5k-9=0
5k=9
k=9/5 or 1 4/5
2007-02-14 03:39:13 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Perhaps the task is just to simplify: combine like terms. In which case, -3k +9k (a negative-negative produces a plus) -1k (the 1 is assumed even when it is not written) adds up to 5k. Then add the numbers that are not coefficients of variables: +7 and -16 (plus a negative produces a negative 16). That is -9. Write out the terms and you have 5k-9.
2007-02-14 01:47:50 · answer #3 · answered by kathyw 7 · 1⤊ 0⤋
-3k+7-(-9k)+(-16)-k
get rid of parenthesis
-3k+7+9k-16-k
add like figures
5k-9=0
5k-9+9=0+9
5k=9
k=9/5
2007-02-14 02:10:09 · answer #4 · answered by Dave aka Spider Monkey 7 · 1⤊ 0⤋
-3k+7- (-9k)+(-16)-k
ANS:
-3k+7+9k-16-k
5k=9
k=9/5
2007-02-14 01:58:01 · answer #5 · answered by MG 2 · 1⤊ 0⤋
=-3K+7+9K+(+16K)
= -3K+7+9K+16K
= 22K+7
IF ITS AN EQUATION THEN
22K+7=0
THEREFORE 22K=-7
SO K=-7/22
2007-02-14 01:41:24 · answer #6 · answered by Kaushal 1 · 1⤊ 0⤋