Question

Tìm x

| x+3/4 | - 1/3 = 0

Answer 1

\(\left|x+\frac{3}{4}\right|-\frac{1}{3}=0\)

TH1: \(x+\frac{3}{4}-\frac{1}{3}=0\)

<=> x=\(-\frac{5}{12}\)

TH2: \(x+\frac{3}{4}+\frac{1}{3}=0\)

<=> x=\(-\frac{13}{12}\)

kl có 2 giá trị x

Answer 2

\(\left|x+\frac{3}{4}\right|-\frac{1}{3}=0\)

\(\left|x+\frac{3}{4}\right|=0+\frac{1}{3}\)

\(x+\frac{3}{4}=\pm\frac{1}{3}\)

Nếu \(x+\frac{3}{4}=\frac{1}{3}\)

\(x=\frac{1}{3}-\frac{3}{4}\)

\(x=-\frac{5}{12}\)

Nếu \(x+\frac{3}{4}=-\frac{1}{3}\)

\(x=\left(-\frac{1}{3}\right)-\frac{3}{4}\)

\(x=-1\frac{1}{12}\)

Vậy \(x=-\frac{5}{12}\) hoặc \(x=-1\frac{1}{12}\)