Question

Answer 1

a: x/-7=3/4

=>x=3/4x(-7)=-21/4

b: x-11=1/3

=>x=1/3+11=1/3+33/3=34/3

c: -3x+1/2=3/4

=>-3x=1/2

hay x=-1/6

Answer 2

\(a)\dfrac{x}{-7}=\dfrac{3}{4}\)

\(\Rightarrow x=\dfrac{-7.3}{4}=\dfrac{-21}{4}\)

\(b)x-11=\dfrac{1}{3}\)

   \(x\)          \(=\dfrac{1}{3}+11\)

   \(x\)          \(=\dfrac{34}{3}\)

\(c)-3x+\dfrac{1}{2}=\dfrac{3}{4}\)

    \(-3x\)          \(=\dfrac{3}{4}-\dfrac{1}{2}=\dfrac{1}{4}\)

        \(x\)           \(=\dfrac{1}{4}:\left(-3\right)=\dfrac{-1}{12}\)