6=(1-2n)+5
6-5=(1-2n)+5-5
1=1-2n
1-1=1-1-2n
0=-2n
0/-2=-2n/-2
0=n
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2n + 5 = 25 < ---------------- Write the Equation 2n = 20
3n+5=2n+7 subtract 2n on both sides. n+5=7 subtract 5 to the other side. n=2 the answer to n is 2. Hoped that helped. (:
10n + 3 = 7n + 53n = 2n = 2/3
7+2n
(n2 + 2n - 1) (n2 + 2n - 1) = n4 + 2n3 - n2 + 2n3 + 4n2 - 2n - n2 - 2n + 1 = n4 + 4n3 + 2n2 - 4n + 1 try with n = 5: (5 squared + 10 - 1) squared = 34 squared = 1156 with formula (5^4) + (4 *(5^3)) + (2 * (5^2)) - (4 * 5) + 1 = 625 + 500 + 50 - 20 + 1 = 1156