Lời giải:

$x+\frac{x}{0,2}=1,35$

$x+x\times 5=1,35$

$x\times (1+5)=1,35$

$x\times 6=1,35$

$x=1,35:6=0,225$

x:1+x:0.2=1.35

x:(1+0.2)=1.35

1:1.2=1.35

x=1.35*1.2

x=1.62

x+x:0,2=1,35
2x : 0,2=1,25
2x=1,35 x 0,2
2x=0,27
x=0,27:2
x= 0, 135

\(x+x:0.2=1.35\)

\(x+x:\frac{1}{5}=1.35\)

\(x+5x=1.35\)

\(6x=1.35\)

\(x=1.35:6\)

\(x=0.225\)

\(x+x:0,2=1.35\)

\(x:1+x:0,2=1,35\)

\(x:\left(1+0,2\right)=1,35\)

\(x:1,2=1,35\)

\(x=1,35\cdot1,2=1,62\)

X+X:0,2=1,35

X+X*5=1,35

X*6=1,35

X=1,35:6

X=?

Bạn tự tính nhé

X + X : 0,2 = 1,35

X x 1 + X x 5 = 1,35

X x ( 1 + 5 ) = 1,35

X x 6 = 1,35

X = 1,35 : 6

X = 0,225 

X + X chia 0,2 =1,35

=> 2x : 0,2 = 1,35

=> 2x = 1,35 * 0,2 

=> 2x = 0,27

=> x = 0,135

= 0,135 đúng không bạn tích nha

x =0,225

a, 1,2+x=1-0,5

    1,2+x=0,5

           x=0,5-1,2

           x=-0,7

b, x+0,49=1,35-0,48

 x+0,49=0,87

   x= 0,87-0,49

   x=0,38

k mik nha

a, \(1-1,2+x=0,5\)

\(\Rightarrow-0,2+x=0,5\)

\(\Rightarrow x=0,5-(-0,2)=0,5+0,2=0,7\)

b,\(1,35-x+0,49=0,48\)

\(\Rightarrow1,35-x=0,48-0,49\)

\(\Rightarrow1,35-x=-0,01\)

\(\Rightarrow x=1,35-(-0,01)=1,35+0,01=1,36\)

bài 2:

1.35:x:5=3        

 1.35:x=3:5

1.35:x=15

x=1.35:0.6

x=0.09

1.35:x*5=3

1.35:x=3:5

1.35:x=0.6

x=1.35:0.6

x=2.25

(*BS*)$KY^{hgghghfh_bvcbcvbvcbvc}