'n' can be any number, but when applied to (2n + 4), n = 2.5
3n + 9 = 3(n + 3)
3 + 3n = 9 + 2n + 4n n = -2
You can't. 17 + 2n = 21 + 2n gives: 2n = 4 + 2n which gives 0=4 which is not possible so the sum is not solveable.
9 - 5n
It's an algbraic expession in the form of: 2n+4
2n plus 4 = 2n + 4
18n + 27 or 9(2n + 3)
6n -3=2n+9 6n-2n=9+3 4n=12 n=12/4 n=3
3n + 9 = 3(n + 3)
2n-9=-4
3 + 3n = 9 + 2n + 4n n = -2
You can't. 17 + 2n = 21 + 2n gives: 2n = 4 + 2n which gives 0=4 which is not possible so the sum is not solveable.
9 - 5n
It's an algbraic expession in the form of: 2n+4
-3n+5n+4 = -4 2n = -4-4 2n = -8 n = -4
The algebraic expression for "2n plus 4" is simply written as (2n + 4). Here, (n) represents a variable, and the expression combines the term (2n), which signifies two times the variable (n), with the constant (4).
6+5n=2n-9Isolate the variable by subtracting 2n and 6 from both sides.5n-2n=-9-63n=-15n=-5