4x+5=2x+19
what do both x's equal?
2007-05-24 10:49:40 · 9 answers · asked by Alexi 1 in Science & Mathematics ➔ Mathematics
Both x's will equal the same thing, that's why they're both called x...
4x+5=2x+19
Subtract 2x from both sides:
4x+5-2x=2x+19-2x
2x+5 = 19
Subtract 5 from both sides:
2x+5-5 = 19-5
2x = 14
Divide both sides by 2:
x = 7
2007-05-24 10:53:38 · answer #1 · answered by mark r 4 · 1⤊ 0⤋
4x + 5 = 2x + 19
4x + 5 - 2x = 2x +19 - 2x (remove the x so they are on the same side - you do this by subtracting the 2x from both sides), then
2x + 5 = 19
2x + 5 - 5 = 19 - 5 (put all the numerals on the right side of the equal sign - you do this by subtracting the 5 from both sides.), then
2x = 14 (divide 2x by 2 and 14 by 2 to get the answer)
so x = 7
Hope this helps.
2007-05-24 10:58:31 · answer #2 · answered by W♥ Knit Twit ♥P 5 · 0⤊ 0⤋
subtract 2x from 4x. subtract 5 from 19. you get 2x=14
divide 14 by 2 you get x=2. both x's have the same answer 2
2007-05-24 10:54:38 · answer #3 · answered by Anonymous · 0⤊ 0⤋
4x + 5 = 2x + 19 can be rewritten as
4x - 2x = 19 - 5
2x = 14 and x = 7
is the solution.
2007-05-24 11:09:37 · answer #4 · answered by Swamy 7 · 0⤊ 0⤋
x=7
2007-05-24 11:07:55 · answer #5 · answered by mirnita_87 2 · 0⤊ 0⤋
the answer is x=7
why? becuase if you subtract 2x from both sides then it will equal 2x+5=19 then you subtract 5 from both sides, making it equal 2x=14. you divide 2 from both sides and that makes x=7
2007-05-24 10:58:38 · answer #6 · answered by Diane M 1 · 0⤊ 0⤋
Ok, here is the detailed answer:
4x + 5 = 2x + 19
4x - 2x = 19 - 5
2x = 14
x = 7
Hope this will help!
2007-05-24 10:53:41 · answer #7 · answered by Anonymous · 0⤊ 0⤋
4x + 5 = 2x +19
4x - 2x = 19 - 5
2x = 14
x = 7
2007-05-24 11:00:51 · answer #8 · answered by Anonymous · 0⤊ 0⤋
x=3! Your welcome! Im ouot of school today!
8th grade!
2007-05-24 11:02:59 · answer #9 · answered by Anonymous · 0⤊ 1⤋