2007-03-07 22:20:23 · 9 answers · asked by jezreel j 1 in Science & Mathematics ➔ Mathematics
2/5x+2=1/5x+6
2/5x-1/5x=6-2
1/5x=4
x=20
2007-03-07 22:50:30 · answer #1 · answered by Anonymous · 1⤊ 0⤋
2/5 x+2=1/5 x+6
So 2/5 x - 1/5 x = 6 - 2
ie 1/5 x = 4
x = 20[5*4=20]
now substitute the value in the equation to find whether its correct or not
2/5 x = 8 and 1/5 x = 4
So 2/5 x+2=1/5 x+6
2/5*20+2=1/5*20+6
8 + 2 (= 10) = 4 + 6
2007-03-07 22:36:27 · answer #2 · answered by amit k 2 · 0⤊ 0⤋
2/5 x+2=1/5 x+6
So 2/5 x - 1/5 x = 6 - 2
ie 1/5 x = 4
Thus x = 20
Check
2/5 x = 8 and 1/5 x = 4
So 2/5 x+2=1/5 x+6
ie 8 + 2 (= 10) = 4 + 6 TRUE!!!!!!!!!!!
So solution is x = 20
2007-03-07 22:25:40 · answer #3 · answered by Wal C 6 · 0⤊ 0⤋
(2/5) x + 2 = (1/5) x + 6
2x + 10 = x + 30
x = 20
Check:-
LHS = (2/5) (20) + 2 = 8 + 2 = 10
RHS = (1/5) (20) + 6 = 4 + 6 = 10
2007-03-07 22:32:53 · answer #4 · answered by Como 7 · 0⤊ 0⤋
-3(2x+5)+10=2x+2(5+x) First, escalate each and every little thing out. -6x - 15 + 10 = 10x + 2x^2 + 10 + 2x Then, shift each and every little thing to the left hand factor. 2x^2 + 10x + 2x + 6x +10 + 15 - 10 = 0 2x^2 + 18x +15 = 0 clean up x using quadratic formulation. x = [-18 +/- squareroot (18^2 - 4(2)(15)] / 2(2) x = [-18 +/- squareroot (204)] / 4 x = [-18 + squareroot (204)] / 4 OR [-18 - squareroot (204)] / 4 x = -0.929 or -8.07
2016-12-18 08:20:42 · answer #5 · answered by shoaf 4 · 0⤊ 0⤋
multiply through by 5 to eleminate the denominator 5
so we get
10x +10 = 1x + 30
use change of subject of formular
therefore
10x - 1x = 30 - 10
9x= 20
x = 20/9
2007-03-07 22:44:21 · answer #6 · answered by isaac b 1 · 0⤊ 0⤋
easy
2/5x-1/5x=6-2
x=4
done, no need to check =)
2007-03-07 22:23:50 · answer #7 · answered by Kirk 2 · 0⤊ 0⤋
same question again?
i have already answer!
open your books!
2007-03-07 22:23:12 · answer #8 · answered by Anonymous · 0⤊ 0⤋
what is checking? perhaps i can help?
2007-03-07 22:23:24 · answer #9 · answered by Anonymous · 0⤊ 0⤋