how to do this equation:
2/5(10-w) =7
Thanks buddies
2006-09-06 15:32:34 · 7 answers · asked by Anonymous in Family & Relationships ➔ Friends
is the answer w= -7.5
2006-09-06 15:37:10 · answer #1 · answered by Jason T 3 · 0⤊ 0⤋
If it is(2/5)(10-w) = 7
10-w = 35/2
10-35/2 = w
-15/2 = w
or if you mean:
2/(5(10-w))= 7
2/(50-5w) = 7
2/7 = 50-5w
2/7-50 = -5w
(2/7-50)/-5 = w
(49 5/7)/5 = w
2006-09-06 22:39:34 · answer #2 · answered by Jimee77 4 · 0⤊ 0⤋
2/5 ( 10-w ) = 7
1) 2/5 = 0.4
2) 7/ 0.4 = 17.5
3) so now 10 - W = 17.5
4) - W = 17.5 - 10 = 7.5
5) so W = - 7.5
now put ( - 7.5 ) value in the equation in the place of W
2/5 ( 10 - ( - 7.5 ) and it equal 7
Good luck :)
2006-09-06 22:42:38 · answer #3 · answered by Anonymous · 0⤊ 0⤋
2/5(10-w) =7
5/2 x 2/5 (10-w) = 5/2 x 7
10-w=35/2=17.5
-w=17.5-10=7.5
w = -7.5
2006-09-06 22:36:53 · answer #4 · answered by Jim 5 · 0⤊ 0⤋
Sorry.
2006-09-06 22:34:20 · answer #5 · answered by eugene65ca 6 · 0⤊ 0⤋
Don't. Math isn't for you.
2006-09-06 22:34:59 · answer #6 · answered by Anonymous · 0⤊ 0⤋
try this http://www.algebrahelp.com
2006-09-06 22:43:51 · answer #7 · answered by wickedfreakinawesome 1 · 0⤊ 0⤋