1. 6 (x + 2) / 4 = 2x - 2
2. 3x + 7/5 = 4x -3/5
3. 6 (y-8) / 5 = -4y
2007-10-27 06:52:22 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
6x+12/4=2x-2
multiply each side by 4
6x+12=8x-8
4=2x
2=x
3x+7/5=4x-3/5
10/5=x
2=x
6y-48/5=-4y
multioly each side by 5
6y-48=-20y
-48=-26y
48/26=y divide both sides by -26
1 22/26= 1 11/13=y
2007-10-27 07:00:15 · answer #1 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋
1) 6(x+2) / 4 = 2x-2
= (6x+12) /4 = 2x-2
= 1(6x+12) / 4 = 2x-2
= 6x+12 / 4 = 2x-2
= 6x-2x = -2x4-12
= 4x = -8-12
= 4x = -20
= x = -20/4
= x = -5
2) 3x + 7/5 = 4x - 3/5
= 3x - 4x = 3 / 5 x 5 -7
= -x = -4
= x = -4 / -1
= x = 4
3) 6 (y-8) / 5 = -4y
= (6y-48) / 5 = -4y
= 1(6y-48) /5 = -4y
= 6y-48/5 = -4y
= -48/5 = -4y-6y
= -9.6 = -10y
= -9.6 / -10 = y
= 0.96 = y
2007-10-27 07:08:05 · answer #2 · answered by seeleeree 3 · 0⤊ 0⤋
6x+12/6 =2x
6x + 12/3
6x + 4
I think that's the answer.
Sorry I hate ugly fractions
2007-10-27 07:02:44 · answer #3 · answered by Anonymous · 0⤊ 0⤋