X : 0,1 - X : 4 - X x 3 / 4 = 2 , 25

X x 10 - X x 1 / 4 - X x 3 / 4 = 2 , 25

X ( 10 - 1 / 4 - 3 / 4 ) = 2 , 25

X x 9                         = 2 , 25

X                               = 0 , 25

tk mình nha

\(y:0,1-y:4-y\times\dfrac{3}{4}=2,25\)

\(y\times10-y\times\dfrac{1}{4}-y\times\dfrac{3}{4}=2,25\)

\(y\times(10-\dfrac{1}{4}-\dfrac{3}{4})=2,25\)

\(y\times9=2,25\)

\(y=2,25:9=0,25\)

Ta có : \(x\div0,1-x\div4-x\times\frac{3}{4}=2,25\) 

\(\Leftrightarrow x\times10-x\times\frac{1}{4}-x\times\frac{3}{4}\)

\(\Rightarrow x\times\left(10-\frac{1}{4}-\frac{3}{4}\right)=2,25\)

\(\Rightarrow x\times9=2,25\)

\(\Rightarrow x=2,25\div9=0,25\)

Mk cần lời giải nhé !

a)x÷0,25-x=15,6

X×4-x×1=15,6

X×(4-1)=15,6

X=15,6÷3

X=5,2

B)x÷0,1-x÷4-x×3/4=2,25

X×10-x×1/4-x×3/4=2,25

X×(10-1/4-3/4)=2,25

X=2,25÷9

X=1/4

Ban co the chep nhanh len chu minh khong co vip toan nen chi dung duoc mot ngay

y x 10 - y x \(\frac{1}{4}\)- y x\(\frac{3}{4}\)= 1,25

y x (10 - \(\frac{1}{4}\)- \(\frac{3}{4}\)) = 1,25

y x 9 = 1,25

y = 1,25 : 9

y = \(\frac{5}{36}\)

`x+x:0,1+x:0,01=111`

`x+x.10+x.100=111`

`x.(1+10+100)=111`

`111x=111`

`x=1`

Vậy x cần tìm là `1`

x + x : 0,1 + x : 0,01 = 111

x.1+x.10+x.100=111

x.(1+10+100)=111

x.111=111

x=111:111

x=1

#YM

x + x : 0,1 + x : 0,01 = 111

x.1+x.10+x.100=111

x.(1+10+100)=111

x.111=111

x=111:111

x=1

                                                      THAM KHẢO !