2007-09-09 13:22:34 · 6 answers · asked by animalhouser07 2 in Science & Mathematics ➔ Mathematics
6y - 4 + 2y = 21 + 6y
8y - 6y = 21 + 4
2y = 25
y = 12.5
2007-09-09 13:25:41 · answer #1 · answered by cjcourt 4 · 1⤊ 1⤋
expand the brackets
6y-4 - -2y = 3*7 + 3 * 2y
6y-4+2y = 21 + 6y
2y-4 = 21 ( -6y both sides )
2y = 21 + 4
2y = 25
2007-09-09 20:30:42 · answer #2 · answered by mark 6 · 0⤊ 0⤋
6y - (4 - 2y) = 3(7 + 2y)
First, expand the brackets
6y - 4 + 2y = 21 + 6y
Group like terms
8y - 4 = 21 + 6y
Get all y's on one side, numbers on the other
2y = 25
y = 25/2
2007-09-09 20:28:09 · answer #3 · answered by Tom :: Athier than Thou 6 · 0⤊ 0⤋
6y - 4 + 2y = 3(7 + 2y)
8y - 4 = 21 + 6y
+4 + 4
8y = 25 + 6y
-6y - 6y
2y = 25
y = 25/2 = 12 1/2
2007-09-09 20:28:09 · answer #4 · answered by norman 7 · 0⤊ 0⤋
6y - (4 - 2y) = 3(7 + 2y)
6y - 4 + 2y = 21 + 6y {distribute the -1 and the 3}
8y - 4 = 21 + 6y {collect like terms}
8y - 4 - 6y = 21 + 6y - 6y {subtract 6y from both sides}
2y - 4 = 21 {collect like terms}
2y - 4 + 4 = 21 + 4 {add 4 to both sides}
2y = 25 {collect like terms}
y = 25/2 {divide both sides by 2}
2007-09-09 20:29:09 · answer #5 · answered by JM 4 · 0⤊ 0⤋
6y-(4-2y)=3(7+2y)
6y-4+2y=21+6y
2y=25
y=12.5
2007-09-09 20:33:16 · answer #6 · answered by Anonymous · 0⤊ 0⤋