Assuming you meant 7n (not just 7 at the end of your question) - first... simplify the equation. Numbers raised to powers get priority - so your new sum is... 5n - 64n + 25n + n + 7n.... This simplifies to... -26n
3n+1=7 3*2+1=7
3(3n - 1)(n + 1)
3n + 2n = 25 5n = 25 n = 5
3n = 15 + 12 = 27, 27/3 = 9 = n
Assuming you meant 7n (not just 7 at the end of your question) - first... simplify the equation. Numbers raised to powers get priority - so your new sum is... 5n - 64n + 25n + n + 7n.... This simplifies to... -26n
3n+2 + (3n+3 - 3n+1) = 3n+1+1 + (3n+1+2 - 3n+1) = 3*3n+1 + (9*3n+1 - 3n+1)= (3+9-1)*3n+1 = 11*3n+1.
It is a algebraic expression which can be simplified depending on the plus or minus values of 3n and 10n which have not been given.
(3n)2 = 9n2
(4n - 1)(3n + 2)
3n + 2 + (3n + 3 - 3n + 1) = 3n + 2 + (3n + 3 - 3n + 1) = 3n + 2 + (4) = 3n + 6
5m+2n, n-3m, 7-3n (5m+2n)+(n-3m)+(7-3n)=2m+7
2+3n+2+9n would equal 4+12n after adding all like numbers.
3n+1=7 3*2+1=7
3(3n - 1)(n + 1)
3n+2+3n+2=6n+4
3n + 2n = 25 5n = 25 n = 5