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Answer 1 · 2017-04-04T04:21:44

#7x(x + 1)#

#10/(7 x), 2/(x + 1)#

#LCD = LCM (7 x, x+1)#

#(7 x, x+1)# #-># divide with #7 -> (x , x +1)#

#(x, x+1)# #-># divide with #x-> (1 , x +1)#

#(1, x+1)# #-># divide with #x + 1 -> (1 , 1)#

#LCD = LCM (7 x, x+1) = 7*x*(x+1) = 7x(x+1)#

#10/(7 x), 2/(x + 1)# #= (10(x+1))/(7x(x+1)#, #(2*7x)/((x + 1)*7 x)#

#= (10x+10)/(7x(x+1)#, #(14x)/((x + 1)*7 x)#