Question

[Bảo Lâm Trần]

Tìm x biết :
      3 ( x - 1 ) + 1/2 =  âm bảy phần bốn

Answer 1

[Ga'l wes]

3 ( x - 1 ) + \(\frac{1}{2}=\frac{-7}{4}\)

3 ( x - 1 ) = \(\frac{-7}{4}-\frac{1}{2}\)

3 ( x - 1 ) = \(\frac{-9}{4}\)

x - 1 = \(\frac{-9}{4}\div3\)

x - 1 = \(\frac{-3}{4}\)

x = \(\frac{-3}{4}+1\)

x = \(\frac{1}{4}\)

Answer 2

[Lê Văn Trung (тεam ASL)]

3(x - 1) + \(\frac{1}{2}\) = \(\frac{-7}{4}\)

3(x - 1) = \(\frac{-7}{4}\) - \(\frac{1}{2}\)

3(x - 1) = \(\frac{-9}{4}\)

x - 1 = \(\frac{-9}{4}\) : 3

x - 1 = \(\frac{-3}{4}\)

x = \(\frac{-3}{4}\) + 1

x = \(\frac{1}{4}\)