Ответ:
А.
1) 7•2/5•9
2) 7/5•3
3) (n+2)/12
4) (a-b)/2
B.
1) 3/8 ; 5/16 ; 2/3 ;
2) b/7 ; 2y/x
Пошаговое объяснение:
1) 3•14•62/31•10•27 = 3•7•2•31•2/31•2•5•3•9 = 7•2/5•9
2) 56•15•38/75•16•57 = 7•8•15•2•19/15•5•8•2•19•3 = 7/5•3
3) (n^2 + 2n)/12n = n(n+2)/12n = (n+2)/12
4) (6a-6b)/12 = 6(a-b)/12 = (a-b)/2
1) 12/32=2•2•3/2•2•8 = 3/8
25/80= 5•5/5•16 = 5/16
222/333 = 2•111/3•111 = 2/3
2) 5abd/35ab = 5abd/5•7ab = b/7
4xy/2x^2 = 2y/x
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Answers & Comments
Ответ:
А.
1) 7•2/5•9
2) 7/5•3
3) (n+2)/12
4) (a-b)/2
B.
1) 3/8 ; 5/16 ; 2/3 ;
2) b/7 ; 2y/x
Пошаговое объяснение:
А.
1) 3•14•62/31•10•27 = 3•7•2•31•2/31•2•5•3•9 = 7•2/5•9
2) 56•15•38/75•16•57 = 7•8•15•2•19/15•5•8•2•19•3 = 7/5•3
3) (n^2 + 2n)/12n = n(n+2)/12n = (n+2)/12
4) (6a-6b)/12 = 6(a-b)/12 = (a-b)/2
B.
1) 12/32=2•2•3/2•2•8 = 3/8
25/80= 5•5/5•16 = 5/16
222/333 = 2•111/3•111 = 2/3
2) 5abd/35ab = 5abd/5•7ab = b/7
4xy/2x^2 = 2y/x