Ответ:
1. n×(a-b)+b×(n+b)/n×(n+b) = an-bn+bn+b²/n²+bn=an+b²/n²+bn
2. yx/2y - 6/2y = xy-6/2y
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Ответ:
1. n×(a-b)+b×(n+b)/n×(n+b) = an-bn+bn+b²/n²+bn=an+b²/n²+bn
2. yx/2y - 6/2y = xy-6/2y