1 вариант
1.a) 1/5x
б)2
B)x-3/x+3
2. 4x+4/x+1=4(x+1)/(x+1)=4
5x+1-6/x-1=5x-5/x-1=5(x-1)(x-1)=5
3x-x-8 / x-4 =2(x-4)(x-4)=2
(5*3)/x=15/x
3(x+2)/x-3 * 4(x-3)/(x+2)=12
2 вариант
1.a) x/3
б) 2(x+3)/ 3 (x+3)=2/3
в) x+2 / x-2
2. а)2x+3+2+3x / x+1 = 5x+5 / x+1 =5(x+1)/ x+1 = 5
б)7x-7 / x-1 = 7 (x-1) / x-1 = 7
в)3x-2x-2 / x-2 = 1
г)1,5x
д) 3(x+3) /x-4 * 4(x-4) / (x-3) * (x+3) = 12/ x-3
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Answers & Comments
1 вариант
1.a) 1/5x
б)2
B)x-3/x+3
2. 4x+4/x+1=4(x+1)/(x+1)=4
5x+1-6/x-1=5x-5/x-1=5(x-1)(x-1)=5
3x-x-8 / x-4 =2(x-4)(x-4)=2
(5*3)/x=15/x
3(x+2)/x-3 * 4(x-3)/(x+2)=12
2 вариант
1.a) x/3
б) 2(x+3)/ 3 (x+3)=2/3
в) x+2 / x-2
2. а)2x+3+2+3x / x+1 = 5x+5 / x+1 =5(x+1)/ x+1 = 5
б)7x-7 / x-1 = 7 (x-1) / x-1 = 7
в)3x-2x-2 / x-2 = 1
г)1,5x
д) 3(x+3) /x-4 * 4(x-4) / (x-3) * (x+3) = 12/ x-3