(7-n)-(7+n)+7 упрощение

Question

(7-n)-(7+n)+7 упрощение

Answer 1

=7-n-7-n+7=7-2n
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Comments

6,1а+1-3,2+(2-4t)+t

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=6,1a-2,2+2-4t+t=6,1a-3t-0,2