Question

1/1*2x+1/2*3x+1/3*4x+1/4*5x+1/6*7x+1/7*8x+1/8*9x+1/9*10x=1/1

Answer 1

1/1*2x+1/2*3x+1/3*4x+1/4*5x+1/5*6x+1/6*7x+1/7*8x+1/8*9x+1/9*10x=1/101/(1*2)x+1/(2*3)x+1/(3*4)x+1/(4*5)x+1/(5*6)x+1/(6*7)x+1/(7*8)x+1/(8*9)x+1/(9*10)x=1/10(1-1/2)x+(1/2-1/3)x+(1/3-1/4)x+(1/4-1/5)x+(1/5...