`x xx0,75+x xx1/4=123,5`
`=>x xx 3/4 + x xx 1/4 = 123,5`
`=>x xx(3/4+1/4)=123,5`
`=>x xx 1 = 123,5`
`=> x = 123,5`
Đúng 2
Bình luận (13)
`x xx0,75+x xx1/4=123,5`
`=>x xx 3/4 + x xx 1/4 = 123,5`
`=>x xx(3/4+1/4)=123,5`
`=>x xx 1 = 123,5`
`=> x = 123,5`
\(\left(\dfrac{1}{1x2}+\dfrac{1}{2x3}+........+\dfrac{1}{8x9}+\dfrac{1}{9x10}\right)xX=\dfrac{3}{4}\)
\(\frac{Xx0,75+2,4}{3,8-0,8}=6,4\)
Xx0,75+2,4/3,8-0,8=6,4
GIẢI CHI TIẾT GIÚP MÌNH
tìm x biết \(\frac{xx0,75+2,4}{3,8-0,8}=6,4\)
\(\dfrac{1}{3}\)+\(\dfrac{1}{6}\)+\(\dfrac{1}{10}\)+.....+1/xx(x+1):2
Tìm x:
\(\dfrac{1}{3}\) + \(\dfrac{1}{6}\)+ \(\dfrac{1}{10}\)+ ...+ \(\dfrac{1}{xx\left(x+1\right):2}\)= \(\dfrac{2017}{2019}\)
Mọ người giúp em với ạ! Em cảm ơn!
Bài 1: Tính
1476,8+123,5=
1234,5+4567,8=
123,5-122,54=?
123,5+123=?