2007-01-16 06:55:42 · 17 answers · asked by kay 1 in Science & Mathematics ➔ Mathematics
17 + 3 = 5x/2
2 X 20 = 40 = 5x
x = 40/5 = 8
2007-01-16 07:00:33 · answer #1 · answered by Anonymous · 1⤊ 0⤋
x=8
first you add three to each sides, so that eliminates the 3 on the left side, and you also add 3 to the right of the equation and that makes the 17 to 20. So you then have 5x/2=20. Then you multiply 2 on each side, and that makes the equation 5x=40. Now 5 times what is 40?? Eight!
2007-01-16 07:03:47 · answer #2 · answered by ♥♫i♥bloo♫ 5 · 1⤊ 0⤋
5x/2 -3=17 <=>
5x/2= 17+3 <=>
5x/2= 20 <=>
you multiply both parts with 2 => 2* (5x/2)= 20*2 <=>
5x= 40 <=>
x= 40/5 <=> x= 8
2007-01-16 07:02:35 · answer #3 · answered by HeAvEnLy_PiNk 3 · 1⤊ 0⤋
First: eliminate the fraction > multiply the denominator by everything...
2(5x/2) - 2(3) = 2(17)
Sec: cross cancel "like" terms & combine the remaining terms...
5x - 6 = 34
Third: add 6 to both sides (moving variables to the opposite side means: use the opposite sign)...
5x - 6 + 6 = 34 + 6
5x = 40
*Solve for "x" by isolating it on one side-divide both sides by 5...
5x/5 = 40/5
x = 8
P.S. Toronto you've been reported & J.R. > there's no need for you to criticize "real" math tutors-they're not idiots.
2007-01-16 07:52:14 · answer #4 · answered by ♪♥Annie♥♪ 6 · 0⤊ 0⤋
8
2007-01-16 07:04:47 · answer #5 · answered by Nick H 1 · 0⤊ 1⤋
(5x divided by 2) - 3 = 17
(5x divided by 2) = 17 +3
(5x divided by 2) = 20
5x = 20 times 2
5x = 40
x = 40 divided by 5
x = 8
2007-01-16 07:03:36 · answer #6 · answered by SHIBZ 2 · 1⤊ 0⤋
x=8
2007-01-16 07:05:44 · answer #7 · answered by Anonymous · 0⤊ 1⤋
x=8
2007-01-16 07:04:16 · answer #8 · answered by J.R. 6 · 0⤊ 1⤋
x=8
2007-01-16 07:02:06 · answer #9 · answered by JEHLERS 2 · 0⤊ 1⤋
5 x 8 = 40
40/2 = 20
20-3 = 17
therefore x=8
2007-01-16 07:04:50 · answer #10 · answered by mommyof1.3kids 2 · 1⤊ 0⤋