Question

[Vũ Hoàng Bảo]

cần câu trả lời gấp!!

Answer 1

[༺ღ¹⁷⁰⁶²⁰¹⁰H𝚘̷àทջ✎﹏ᑭh𝚘̷ทջღ²ᵏ¹⁰༻ღtea...]

a) \(\dfrac{-4}{7}x+\dfrac{1}{3}=\dfrac{7}{3}\)

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

     \(\dfrac{-4}{7}x=2\)

     \(x=2\div\dfrac{-4}{7}\)

     \(x=\dfrac{-7}{2}\)

Vậy \(x=\dfrac{-7}{2}\)

b) \(x+80\%x=-1\dfrac{2}{5}\)

    \(1x+\dfrac{4}{5}x=\dfrac{-7}{5}\)

    \(\left(1+\dfrac{4}{5}\right)x=\dfrac{-7}{5}\)

    \(\dfrac{9}{5}x=\dfrac{-7}{5}\)

    \(x=\dfrac{-7}{5}\div\dfrac{9}{5}\)

    \(x=\dfrac{-7}{9}\)

Vậy \(x=\dfrac{-7}{9}\)

Answer 2

[vũ quỳnh anh]

a) −47x+13=73−47x+13=73

     −47x=73−13−47x=73−13

     −47x=2−47x=2

     x=2÷−47x=2÷−47

     x=−72x=−72

Vậy x=−72x=−72

b) x+80%x=−125x+80%x=−125

    1x+45x=−75