0
Anonymous
2(4)
= 8
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2n/3 = 4 2n = 3*4 2n = 12 n = 6 :)
n = 1
-3n+5n+4 = -4 2n = -4-4 2n = -8 n = -4
Move the 2n over the equals sign. Become 4n (as 6n-2n= 4n) and then if 4n=16 then n=4.
25 - 4(4) = 25 - 16 = 9.