2006-08-24 13:30:09 · 17 answers · asked by Hayden 1 in Science & Mathematics ➔ Mathematics
2x+3 = x+7
2x - x = 7 - 3
x = 4
2006-08-24 13:31:24 · answer #1 · answered by Anonymous · 6⤊ 0⤋
First, as x is the same number, so when applied to the 2, (2x) it will increase the same as if applied to a 1, (x), so you can add/subtract these two value, so first you would subtract x from both sides, (2x-x)+3=(x-x)+7 as you are doing the same to both sides the statment stays true( 2=2, (2-1)=(2-1) ).
Once you subract the x from both sides you are left with:
(1x)+3 = 0+7
Now you just subtract 3 from both sides:
x + (3-3) = (7-3)
And are left with:
x + 0 = 4
or:
x=4
2006-08-24 20:35:46 · answer #2 · answered by Alex D. 2 · 0⤊ 0⤋
Solve,
2x + 3 = x + 7
2x - x = 7 - 3
x = 4
2006-08-24 20:54:24 · answer #3 · answered by ideaquest 7 · 0⤊ 0⤋
2x4=8+3=11 4+7=11
2006-08-24 20:34:11 · answer #4 · answered by Anonymous · 0⤊ 1⤋
2x+3 = x+7
x+3 = 7 subtract x from 2x
x =4 subtract 3 from 7
2006-08-24 20:33:27 · answer #5 · answered by TopSpin 5 · 0⤊ 0⤋
multiply 7 times 3, then 7 times 2x, giving you 14x +21
then multiply x times 3, then x times 2x, giving you 2x^2 +3x
add the two terms together and you get the answer:
2x^2 + 17x + 21
2006-08-24 20:34:23 · answer #6 · answered by josramco 2 · 0⤊ 0⤋
2x+3 = x+7
2x - x = 7 - 3
x = 4
good luck
2006-08-24 20:33:28 · answer #7 · answered by @}----}---- 2 · 0⤊ 0⤋
2x is really 2 times 2 which equals 4
add the plus 3 and you get 7
Is this a real question?
2006-08-24 20:34:41 · answer #8 · answered by xavierwold 2 · 0⤊ 0⤋
put the x on one side and put the other rest on the other side
2x+3= x+7
2x-x+3-3=x-x+7-3
x=4
2006-08-24 20:32:39 · answer #9 · answered by laroya05 3 · 2⤊ 0⤋
arrange all variables on the left, and all numbers on the right
2x + 3 = x + 7
-x -x
--------------------------
x + 3 = 7 and now move numbers to right
- 3 -3
----------------------
x = 4
Inverse operations and segregation of variables.
2006-08-24 20:34:51 · answer #10 · answered by naked_in_lake 2 · 0⤊ 0⤋