Question

giúp tớ với

Answer 1

a: =>3/2:x=5/8-13/4=5/8-26/8=-21/8

=>x=-4/7

b: =>3/2x+2x=5/4-1/4=1

=>7/2x=1

hay x=2/7

Answer 2

\(3\dfrac{1}{4}+\dfrac{3}{2}:x=\dfrac{5}{8}.\\ \Leftrightarrow\dfrac{13}{4}+\dfrac{3}{2}:x=\dfrac{5}{8}.\\ \Leftrightarrow\dfrac{3}{2}:x=\dfrac{-21}{8}.\\ \Leftrightarrow x=-\dfrac{4}{7}.\)

\(\dfrac{3}{2}x+0,25=1\dfrac{1}{4}-2x.\\ \Leftrightarrow\dfrac{3}{2}x+\dfrac{1}{4}=\dfrac{5}{4}-2x.\\ \Leftrightarrow\dfrac{3}{2}x+2x=\dfrac{5}{4}-\dfrac{1}{4}.\\ \Leftrightarrow\dfrac{7}{2}x=1.\\ \Leftrightarrow x=\dfrac{2}{7}.\)