SOLUTION: The sum of 38 and twice a number is 124 find the number I put . . . .38+2n=124 2n=124+28 I got this far but still dont understand

Algebra ->  Systems-of-equations -> SOLUTION: The sum of 38 and twice a number is 124 find the number I put . . . .38+2n=124 2n=124+28 I got this far but still dont understand      Log On


   



Question 894542: The sum of 38 and twice a number is 124 find the number
I put . . . .38+2n=124
2n=124+28
I got this far but still dont understand

Answer by reviewermath(1029) About Me  (Show Source):
You can put this solution on YOUR website!
Q:
The sum of 38 and twice a number is 124 find the number
A:
The first equation 38 + 2n = 124 is correct.
You change the sign of the number when you transpose it.
The second equation should be
2n = 124 - 38
2n = 86
Divide both sides by 2.
highlight%28n+=+43%29