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Earn +20 ptsQ: The difference of 7 and a number n?
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The difference of 8 and a number?
n-8
What is the difference of 8 and a number n?
8-n
Four times a number is three times the difference between thirty five and the number?
Suppose the number is N then 4N = 3*abs(35-N) where abs(35-N) is the difference between 35 and N If N > 35 then 4*N = 3*(N-35) = 3*N - 105 So N = -105 If N < 35 then 4*N = 3*(35-N) = 105 - 3*N So 7*N = 105 ie N = 15 So N = -105 or 15
What is the expression for difference of 8 and a number?
n - 8 is the expression for the difference of eight and a number.'Number' is a variable, so the variable must be a letter (in this case, 'n'). 'The difference' is going to be the subtraction symbol that is in between the 'number' and eight, so it must be n - 8. It could, of course, be 8 - n.
The sum of a number and 7?
n+7
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