Question

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Answer 1

1) 7(x+y)/21= (x+y)/3
2) 4(2m-n)/4m= (2m-n)/m
3) 3(3a+4b)/3= 3a+4b
4) 9(5c+2d)/27d= (5c+2d)/3d
5) x(5-y)/x= 5-y
6) 2m(3n-2)/2m= 3n-2