=(x+x+x+........+x)+(0.1+0.2+0.3+.........+4.9)=44.2
/ có 49x hay 50x nhe tự xem đi /
44.2 - ((4.9+0.1). k/c :2)=(x+x+x+..........+x)=?
lấy ? : (cái trong //)= x
can you k me
0.1+0.2+0.3+0.4+...+0.x=4.5
0.1+0.2+0.3+...+0.x=4.5
bài 1:tìm X:0.1+0.2+0.3+0.4+...+0.X=4.5
Bài 2:Tính:10,1+11,12+12,13+...+97.98+98.99+99.100
bài 3:tính:1.3-3.2+5.1-7+8.9-10.8+....+35.5-37.4+39.3-41.2+43.1
Tìm x
a/ (x+0.2)+(x+0,7)+(x+1,2)+.........+(x+4,7)=147,3
b/(x+0.1)+(x+0,3)+(x+0,5)+.........+(x+1.9)=120
x+0.1+x+0.2+x..........+x+0.5=5.55
X+X:0.1+X:0.2+X:0.25=192
0.1+0.2+0.3+0.4+.........+1.9=?
0.1+0.2+0.3+0.4+.............+0.19
0.1+0.2+0.3+.............
0.19=?
