2007-09-11 23:11:53 · 9 answers · asked by elsie a 1 in Science & Mathematics ➔ Mathematics
4x = 20(0.6 x) - 40
4x = 12 x - 40
40 = 8x
x = 5
2007-09-11 23:21:51 · answer #1 · answered by Como 7 · 3⤊ 1⤋
.4x-1.2x=-4
.8x = 4
x = 4*10/8
x=5
2007-09-11 23:20:22 · answer #2 · answered by Words Of Wisdom 3 · 1⤊ 1⤋
.4x = 2(.6x) - 4
.4x = 1.2x - 4
.4x - 1.2x = -4
-.8x = -4
x = 5
2007-09-11 23:25:25 · answer #3 · answered by cloudy 2 · 0⤊ 2⤋
,4x=2(.6)x-4
.4x=1.2x-4
multiply both sides by 10;
4x=12x-4
8x=4
x=1/2=0.5ANS.
2007-09-11 23:52:51 · answer #4 · answered by Anonymous · 0⤊ 3⤋
.4x = 2(.6x) - 4
.4x = 1.2x - 4
.4x - 1.2x = -4
-.8x = -4
x = 5
2007-09-11 23:29:18 · answer #5 · answered by sv1973 2 · 0⤊ 3⤋
.4x = 2(.6x) - 4
.4x = 1.2x - 4
1.6x = -4
x = .5
2007-09-11 23:22:44 · answer #6 · answered by scooter321x 1 · 0⤊ 4⤋
0.4x?
0.4x = 1.2x - 4
4 = 0.8x
x = 5
2007-09-11 23:21:41 · answer #7 · answered by Jay 4 · 1⤊ 1⤋
.4x=2(.6x)-4
.4x=1.2x-4
.4x-1.2x=-4
-.8x/-.8= -4/-.8
x=.5
2007-09-11 23:22:14 · answer #8 · answered by jimrey12 1 · 0⤊ 4⤋
.4x=1.2x-4
.4x-1.2x=-4
-0.8x=-4
x=-4/-0.8
x=5
2007-09-11 23:19:33 · answer #9 · answered by Anonymous · 0⤊ 2⤋