Đáp án:
$F)$ $x =$ $\dfrac{2}{3}$
$G)$ $x =$ $\dfrac{13}{14}$
$N)$ $x =$ $\dfrac{32}{91}$
Giải thích các bước giải:
$F)$ $\dfrac{3}{4}$ $x =$ $\dfrac{1}{2}$
`=>` $x =$ $\dfrac{1}{2}$ : $\dfrac{3}{4}$
`=>` $x =$ $\dfrac{2}{3}$
$Vậy$ $x =$ $\dfrac{2}{3}$
$G)$ $\dfrac{4}{7}$ $+ x =$ $\dfrac{3}{2}$
`=>` $x =$ $\dfrac{3}{2}$ `-` $\dfrac{4}{7}$
`=>` $x =$ $\dfrac{13}{14}$
$Vậy$ $x =$ $\dfrac{13}{14}$
$N)$ 4$\dfrac{4}{7}$ $: x = 13$
`=>` $x =$ $\dfrac{32}{7}$ $: x = 13$
`=>` $x = $ $\dfrac{32}{7}$ $: 13$
`=>` $x = $ $\dfrac{32}{91}$
$Vậy$ $x =$ $\dfrac{32}{91}$
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