Question

Answer 1

Câu 2:
\(a,x+\dfrac{2}{9}=\dfrac{-5}{12}\)
\(x=\dfrac{-5}{12}-\dfrac{2}{9}\)
\(x=\dfrac{-15}{36}-\dfrac{8}{36}\)
\(x=\dfrac{-23}{36}\)
Vậy ...
\(b,\dfrac{-3}{4}x-\dfrac{1}{5}=0,25\)
\(-0,75x=0,25+0,2\)
\(-0,75x=0,45\)
\(x=0,45:\left(-0,75\right)\)
\(x=-0,6\)
Vậy ...
\(c,\left|x+\dfrac{1}{2}\right|=1,5\)
\(x+\dfrac{1}{2}=1,5\) hoặc \(x+\dfrac{1}{2}=-1,5\)
\(x+0,5=1,5\)        \(x+0,5=-1,5\)
\(x=1,5-0,5\)        \(x=-1,5-0,5\)
\(x=1\)                      \(x=-2\)
Vậy ...