Question

Tìm x:

1.23 x X - 1,02 x X = 4,2

 

Answer 1

1.23xX-1.02xX=4.2

Xx(1.23-1.02)=4.2

Xx0.21=4.2

X=4.2:0.21

X=20

Answer 2

\(1,23.x-1,02.x=4,2\)

\(\Rightarrow\left(1,23-1,02\right).x=4,2\)

\(\Rightarrow0,21x=4,2\)

\(\Rightarrow x=4,2:0,21\)

\(\Rightarrow x=20\)

Vậy x = 20

Answer 3

X*(1,23-1,02)=4,2

X*0.21=4,2

X=20

Answer 4

\(1,23\times x-1,02\times x=4,2\)

\(x\times\left(1,23-1.02\right)=4,2\)

\(x\times0,21=4,2\)

\(x=4,2:0,21\)

\(x=20\)

Answer 5

Xx(1.23-1.02)=4.2

Xx0.21=4.2

X=4.2:0.21

X=20

Vậy x=20