Question

(x+1)+(x+3)+(x+5)+.........+(x+99)=0

Answer 1

=> 50x + (99 + 1).50:2 = 0

50x + 2500 = 0

50x = -2500

x = -50 

Answer 2

(x+1)+(x+3)+...+(x+99)=0

x+1+x+2+...+x+99=0

50x + (99+1)x50:2=0

50x+2500=0

50x=0-2500=-2500

x=-2500:50

x=-50

Answer 3

(x+1)+(x+3)+.........+(x+99)=0

=>(x+x+....50 số x......+x)+(1+3+5+.......+99)=0

=>50x+2500=0

=>50x=-2500

=>x=-50