Question

x+(x+1)+(x+2)+......+(x+99)=5450

Answer 1

=>(x+x+x+...+x)+(1+2+3+...+99)=5450(100 số hạng x)

=>100x+4950=5450

=>100x=5450-4950

=>100x=500

=>x=5

 Vậy x=5

Answer 2

co the do hon khong

Answer 3

100x+(1+2+3+4+....+99)=5450

100x+4050=5450

100x=5450-4950=500

suy ra x= 500 : 100 = 5

vậy x= 5

Answer 4

100x+(1+2+3+...+99)=5450

100x+49.100+50=5450

100x+4950=5450

100x = 5450-4950

100x =500

x=500:100

x=5