Khi \(x=-\frac{7}{4}\)
\(A=\left(2x-3\right):\left(x+\frac{7}{4}\right)\)
\(\Rightarrow A=\left(2.\left(-\frac{7}{4}\right)-3\right):\left(-\frac{7}{4}+\frac{7}{4}\right)\)
\(\Rightarrow A=\left(2.\left(-\frac{7}{4}\right)-3\right):0\)
\(\Rightarrow A=0\)
tíc mình nha