1.
а) 2x²/14x = x/7
б) 2x-8/3x-12 = 2(x-4)/3(x-4) = 2/3
в) 14a/21ab = 2/3b
г) 8m²n/12mn² = 2m/3n
д) 4m-4n/8mn = 4(m-n)/8mn = m-n/2mn
е) 12ab/6a-6b = 12ab/6(a-b) = 2ab/a-b
ж) x²-4/(x-2)² = (x-2)(x+2)/(x-2)² = x+2/x-2
з) 2x-1/(2x-1)² = 1/2x-1
и) 12ab(x-1)/24a(1-x) = b(x-1)/-2(x-1) = -b/2
2.
а) 5/3x и 7/6
10/6x и 7x/6x
б) 2/5x и 1/20x
8/20x и 1/20x
в) 4/x-6 и x/2x-12
8/2x-12 и x/2x-12
г) 4/x-6 и x/6-x
4/x-6 и -x/x-6
д) x/x+5 и 5/x²-25
x²-5x/x²-25 и 5/x²-25
е) x/4x+x² и 4/3x+12
x/x(4+x) и 4/3(x+4)
3x/3x(4+x) и 4x/3x(4+x)
3x/12x+3x² и 4x/12x+3x²
ж) x/1-x² и x/x+1
x/1-x² и x(x-1)/1-x²
x/1-x² и x²-x/1-x²
з) 2/x²+4x+4 и x/x+2
2/(x+2)² и x(x+2)/(x+2)²
2/(x+2)² и x²+2x/(x+2)²
x - 9y + 2y - 4x = x - 4x - 9y + 2y = -3x - 7y
3n + 4,3m - 5n + 6,5 - 3m = 3n - 5n + 4,3m - 3m + 6,5 = -2n + 1,3m + 6,5