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

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

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

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

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

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

X : 0,25 - X = 15,6

X × 4 - X = 15,6

X × (4 - 1) = 15,6

X × 3 = 15,6

X = 15,6 : 3

X = 5,2

--------

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 × 9 = 2,25

X = 2,25 : 9

X = 0,25

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

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

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

\(y\times9=2,25\)

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

tao hahaha

? cười j 

x=0,25
Tick cho mình nha Nguyễn Thùy Linh
 

giai han gia cho minh nhe

X=0,25 nha ^^ (các bn nhớ k cho mik nha )

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

cam on an hoa nhieu nha

Tìm X:X:0,1-x:4-x x3/4=2,25

X x10&x x1/4-,x x3/4=2,25

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

X x9=2,25

X=0,25 nhoa 👌🏻

a.=> \(\frac{\left(\frac{1}{3}\right).x}{\frac{2}{3}}=\frac{\frac{7}{4}}{\frac{2}{5}}\)

=> \(\frac{1}{3}.x=\frac{7}{4}.\frac{2}{3}:\frac{2}{5}\)

=>\(\frac{1}{3}.x=\frac{35}{12}\)

=> x\(=\frac{35}{12}:\frac{1}{3}\)

Vậy x=\(\frac{35}{4}\).

b. => \(\frac{4,5}{0,3}=\frac{2,25}{0,1.x}\)

=>\(0,1.x=\frac{2,25.0,3}{4,5}\)

=>\(0,1.x=0,15\)

=>\(x=0,15:0,1\)

Vậy x=1,5

c. =>\(\frac{8}{\frac{1}{4}.x}=\frac{2}{0,02}\)

=>\(\frac{1}{4}.x=\frac{8.0,02}{2}\)

=>\(\frac{1}{4}.x=0,08\)

=>\(x=0,08:\frac{1}{4}\)

Vậy x=0,32.

d. =>\(\frac{3}{\frac{9}{4}}=\frac{\frac{3}{4}}{6.x}\)

=>\(3.6x=\frac{9}{4}.\frac{3}{4}\)

=>\(18x=\frac{27}{16}\)

=>\(x=\frac{27}{16}:18\)

Vậy x=\(\frac{3}{32}\)