SOLUTION: the difference between eight times a number and 7 more than 2 times the number

Question 922637: the difference between eight times a number and 7 more than 2 times the number
Found 2 solutions by JoelSchwartz, drvidmar:
Answer by JoelSchwartz(130) (Show Source): You can put this solution on YOUR website!
x=some number
8x-(7+2x)
8x-7-2x
6x-7
Answer by drvidmar(5) (Show Source): You can put this solution on YOUR website!
the difference between eight times a number and 7 more than 2 times the number
Answer:
Eight times a number can be expressed as 8n, where n is the number.
Similarly, two times a number can be expressed as 2n. 7 more than that is expresed as 2n+7.
Difference means subtracting one from the other.
8n minus 2n+7 means, first, subtracting 2n from 8n, leaving 6n. Then we subtract 7 (from the 2n+7), but having no number to subtract the 7 from, we can only say -7.
So, we have 6n-7 as our answer.
Expressed as an equation:
8n - (2n+7) = 6n-7
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