Question

[Quang Huy Aquarius]

\(4-\left(x-\frac{1}{2}\right)-3\left(5-x\right)=0\)

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Tìm x

Giúp với 7h mik nộp bài rùi

Answer 1

[ngonhuminh]

minh co gang lam tung buoc nho cho ban hieu.

\(4-\left(x-\frac{1}{2}\right)-3\left(5-x\right)=0\)

{nhan pp pha ngoac

\(4-x+\frac{1}{2}-3.5+3.x=0\)

{gom cac so hang, hang so chuyen ben tay phai}

\(\left(3x-x\right)=3.5-4-\frac{1}{2}=15-4-\frac{1}{2}=11-\frac{1}{2}=\frac{21}{2}\)

\(2x=\frac{21}{2}\Rightarrow x=\frac{21}{2}:\frac{2}{1}=\frac{21}{2}.\frac{1}{2}=\frac{21}{4}\)

\(x=\frac{21}{4}\)

Answer 2

[Nguyễn Thị Hồng Nhung]

x=-7,75