11n-6=9n ? show how u got it plz!! another is 4b+17 =b+23
2007-11-10 10:42:28 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
11n+-6=9n
=-11n +-11n
-6=-2n
-6/-2n
n=3
2007-11-10 10:51:42 · answer #1 · answered by J. Smith 1 · 0⤊ 0⤋
11n - 6 = 9n
Subtract 9n from BOTH sides of the equation:
11n - 9n - 6 = 9n - 9n, which simplifies to
2n - 6 = 0
Add 6 to both sides:
2n -6 +6 =0+6
2n=6
4b + 17 = b + 23
Subtract both 1b and 17 from both sides:
4b-1b + 17-17 = b - 1b + 23-17
3b = 6
2007-11-10 18:50:34 · answer #2 · answered by DWRead 7 · 0⤊ 0⤋
11n - 6 = 9n
2n - 6 = 0 (subtract 9n on both side)
2n = 6 (add 6 )
n = 3 (divide by 2)
4b + 17 = b + 23
3b + 17 = 23 ( sub b)
3b = 6 (sub 17)
b = 2 (divide by 3)
2007-11-10 18:47:58 · answer #3 · answered by norman 7 · 0⤊ 0⤋
11n-6=9n
transfer terms by "resemblance"in order to be able to operate with them,taking care to change sign[+ -] on the ones you transfer
11n-9n=6
2n=6
n=3
4b+17=b+23
4b-b=23-17
3b=6
b=2
2007-11-10 19:27:37 · answer #4 · answered by nikite82 1 · 0⤊ 0⤋