Question

X : 5 = 1/5. x + 3/4 = 4/5

Answer 1

`x:5=1/5`

`=>x= 1/5 xx 5`

`=>x= 5/5=1`

`---`

`x+3/4 =4/5`

`=>x=4/5-3/4`

`=>x= 16/20-15/20`

`=>x=1/20`

Answer 2

Lời giải:

$x:5=\frac{1}{5}$

$x=\frac{1}{5}\times 5=1$

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$x+\frac{3}{4}=\frac{4}{5}$

$x=\frac{4}{5}-\frac{3}{4}=\frac{1}{20}$

Answer 3