Question

Tìm x 

\(\left(4,5-2\times x\right)\div\frac{3}{4}=1\frac{1}{3}\)

Giúp mk với mk đang cần gấp

 

Answer 1

\(\left(4.5-2\cdot x\right):\frac{3}{4}=1\frac{1}{3}\)

\(\left(4.5-2x\right):\frac{3}{4}=\frac{4}{3}\)

\(\left(4.5-2x\right)=\frac{4}{3}\cdot\frac{3}{4}\)

\(4.5-2x=1\)

\(2x=4.5-1\)

\(2x=3.5\)

\(x=3.5:2\)

\(x=1.75\)

Answer 2

(4,5 - 2 x X) : 3/4 = 1 1/3

(4,5 - 2 x X)         = 1 1/3 x 3/4

(4,5 - 2 x X)         = 1

        2 x X          = 4,5 - 1

        2 x X          = 3,5

              X         = 3,5 : 2

              X         = 1,75

chúc bạn học giỏi ^_^

tk mk nha !!!

Answer 3

\(\left(4,5-2\cdot x\right)\div\frac{3}{4}=1\frac{1}{3}\)

\(\left(4,5-2\cdot x\right)\div\frac{3}{4}=\frac{4}{3}\)

\(\left(4,5-2\cdot x\right)=\frac{4}{3}\cdot\frac{3}{4}\)

\(4,5-2\cdot x=1\)

\(2\cdot x=4,5-1\)

\(2\cdot x=3,5\)

\(x=3,5\div2\)

\(x=1,75\)

Answer 4

( 4,5 - 2 . x ) : 3/4 = 1/1/3

( 4,5 -2 .x )    :3/4 = 4/3

4,5-2.x                = 4/3.3/4

4,5-2.x                = 1

      2.x                = 4,5-1

      2x                = 3,5

        x                = 3,5:2

        x                = 1,75

Vậy x=1,75

Answer 5

\(\left(4.5-2\cdot x\right)\div\frac{3}{4}=1\frac{1}{3}\)

\(\Leftrightarrow4.5-2\cdot x=1\frac{1}{3}\cdot\frac{3}{4}=1\)

\(\Leftrightarrow2\cdot x=4.5-1=3.5\)

\(\Rightarrow x=3.5\div2=\frac{7}{4}\)

Answer 6

\(\left(4,5-2x\right):\frac{3}{4}=\frac{4}{3}\)

=\(4,5-2x=\frac{4}{3}\cdot\frac{3}{4}\)

=\(4,5-2x=1\)

= \(2x=4,5-1\)

=\(2x=3,5\)

\(x=3,5:2\)

\(x=1,75\)