2 câu trả lời
$\frac{-3}{5}$ x = $\frac{21}{10}$
x = $\frac{21}{10}$ : $\frac{-3}{5}$
x = $\frac{-7}{2}$
Vậy x = $\frac{-7}{2}$
$\dfrac{-3}{5}$`x` `=` $\dfrac{21}{10}$
`⇔` `(-0,6)``x` `=` `2,1`
`⇔` `x` `=` `2,1` `:` `(-0,6)` `=` `- 3,5`
$\frac{-3}{5}$ x = $\frac{21}{10}$
x = $\frac{21}{10}$ : $\frac{-3}{5}$
x = $\frac{-7}{2}$
Vậy x = $\frac{-7}{2}$
$\dfrac{-3}{5}$`x` `=` $\dfrac{21}{10}$
`⇔` `(-0,6)``x` `=` `2,1`
`⇔` `x` `=` `2,1` `:` `(-0,6)` `=` `- 3,5`
