Question

Answer 1

a: =>10/3x+16,75=-13,25

=>10/3x=-30

=>x=-30:10/3=-9

c: =>0,75x=1/2

hay x=1/2:3/4=1/2x4/3=4/6=2/3

Answer 2

\(a,\)\(\Leftrightarrow\dfrac{10}{3}x+\dfrac{67}{4}=-\dfrac{53}{4}\)

\(\Leftrightarrow\dfrac{10}{3}x=-\dfrac{53}{4}-\dfrac{67}{4}\)

\(\Leftrightarrow\dfrac{10}{3}x=-30\)

\(\Leftrightarrow x=-30:\dfrac{10}{3}\)

\(\Leftrightarrow x=-30\times\dfrac{3}{10}\)

\(\Leftrightarrow x=-9\)

\(c,\Leftrightarrow x-\dfrac{1}{4}=\dfrac{1}{2}\)

\(\Leftrightarrow x=\dfrac{1}{2}+\dfrac{1}{4}\)

\(\Leftrightarrow x=\dfrac{2}{4}+\dfrac{1}{4}\)

\(\Leftrightarrow x=\dfrac{3}{4}\)