Question

Tìm x :

      x + x : 0,2 = 1,35

Answer 1

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

Answer 2

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

Answer 3

x + x : 0,2 = 1,35

x + \(\frac{x}{0,2}\)= 1,35

x*(1+\(\frac{1}{0,2}\)) =1,35

x*6=1.35

x= 1.35 : 6

x=0.225

Answer 4

\(x+x:\frac{1}{5}=1,35\)

\(x+5x=\frac{27}{20}\)

\(6x=\frac{27}{20}\)

\(x=\frac{27}{20}:6\)

\(x=\frac{9}{40}\)

\(x=0,225\)

Vậy x=0,225

Answer 5

x+x:0,2=1,35

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

\(\Rightarrow\)2x=1,35×0,2

\(\Rightarrow\)2x=0,27

\(\Rightarrow\)x=0,135