I keep getting -9 and its wrong
2007-10-22 14:43:30 · 10 answers · asked by johnniedr3 1 in Science & Mathematics ➔ Mathematics
simplify
2y + 18 = 12 - 6y - 42
isolate y and combine like terms
8y = -48
divide both sides by 8
y = -6
2007-10-22 14:48:55 · answer #1 · answered by forgetfulpcspice 3 · 0⤊ 0⤋
2y + 18 = 12-6(y+7)
2y + 18 = 12 -6y-42 (distributive prop -6 x 7)
2y+18-18=12-6y-42-18 (move the 18 over)
2y= -6y -48 (+12-42-18 = -48)
2y= -6y -48 +6y
2y + 6y = -48
8y divided by 8= -48 divided by 8
y= -6
tada!...hope i helped..ask me if you have any questions.
2007-10-22 21:53:49 · answer #2 · answered by Anonymous · 0⤊ 0⤋
2y + 18 = 12 - 6y - 42
isolate y and combine like terms
8y = -48
divide both sides by 8
y = -6
2007-10-22 21:52:41 · answer #3 · answered by Anonymous · 0⤊ 0⤋
-6 is the correct answer.
Expand the equation to 2y+18 = 12-6y-42.
Combine like terms: 2y+18=-30-6y
Add 6y to each side and -18 to each side: 8y=-48.
Divide each side by 8: y = -6
2007-10-22 21:49:42 · answer #4 · answered by Anonymous · 0⤊ 0⤋
2y + 18 - 12 = -6y - 42
2y + 6 + 42 + 6y = 0
8y + 48 = 0
y = -48/8
y = -6
2007-10-22 21:48:13 · answer #5 · answered by MARS 3 · 0⤊ 0⤋
look at the right side - 12-6(y+7) = 12 -6y -42y = -30 -6y
2y+18 = -30 -6y --add 6y to each side
8y + 18 = -30 -- subtract 18 from each side
8y = -48 --divide 8 from each side
y = -6
plug it back in to check 6=6
2007-10-22 21:52:47 · answer #6 · answered by maxj 1 · 0⤊ 0⤋
2y + 18 = 6y + 42
2y + 6y = 42 - 18
8y = 24
y = 3
2007-10-22 21:56:19 · answer #7 · answered by Anonymous · 0⤊ 0⤋
2y + 18 = 12 - 6y - 42
8y = - 48
y = - 6
2007-10-24 02:57:08 · answer #8 · answered by Como 7 · 0⤊ 0⤋
it goes:
2y+18=12-6(y+7)
2y+18=12-6y-42
8y=-48
y=-6
not sure if i did that right. beenn a while since ive done these. stupid video games messing wiht my mind.
2007-10-22 21:48:51 · answer #9 · answered by chiken nugget 2 · 0⤊ 0⤋
2y = 12-6y-42-18
8y = 12-42-18
8y = -48
y = -6
2007-10-22 21:47:31 · answer #10 · answered by Jimmy L 2 · 0⤊ 0⤋