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༺ღ¹⁷⁰⁶²⁰¹⁰H𝚘̷àทջ✎﹏ᑭh𝚘̷ทջღ²ᵏ¹⁰༻ღtea... · Accepted Answer

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 $x=\dfrac{-7}{9}$Câu trả lời: 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 $x=\dfrac{-7}{9}$

vũ quỳnh anh · Answer

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