(x+2)+(x+4)+................+(x+100)=2700
x+2+x+4+..............+x+100=2700
50x+(2+4+..........+100)=2700
50x+2550=2700
50x=2700-2550
50x=150
x=150:50
x=3
Tim x biet (x + 2) + (x + 4) + (x + 6) + ... + (x + 100) = 2700
Tim X, biet: X x 2 + X x 3 + X x 4 + X = 100
tim x biet x nhan 2 cong x nhan 3 cong x nhan 4 cong x bang 100
Tim x biet : ( x + 1 ) + ( x + 2 ) ( x + 3 ) + ( x +4 ) + ( x + 5 ) = 4 + 5 + 6 + 7 + 8
tim x biet 1 / 3 x 4 + 1 / 4 x 5 + 1 / 5 x 6 + 1 / 6 x 7 = 1 / x
Cho x la so tròn chuc tim X biet:
2050>x> 2035
ghi them loi giai!!
Tim phan so X/Y biet hieu cua X va Y bang 8 va X/Y sau khi rut gon chi bang 5/3?
Ghi them loi giai!!
tim X biet: X x 2 + X x 3 + X x 4 + X x 5 + x = 2130
x+x:2-x:4/5=15.Tim gia tri nho nhat cua x
Ban nao tra loi dung va nhanh nhat mk se tk cho!Nho lam nhanh nhe