Question

Solve the following equations:
1.
$\frac{7}{x} = 21$
2.
$30 = \frac{6}{x}$
3.
$\frac{5}{x} = 3$
​

Answer 1

Step-by-step explanation:

hope you understand this

Answer 2

Answer 1 :-

$\longmapsto \sf\dfrac{7}{x} = 21$

Transposing x from LHS to RHS, changing it's sign,

$\longmapsto \sf7 = 21 \times x$

Multiplying 21 with x,

$\longmapsto\sf7 = 21x$

Transposing 21 from RHS to LHS, changing it's sign,

$\longmapsto\sf \dfrac{7}{21} = x$

Reducing 7/21 to it's simplest form,

$\longmapsto \underline{\boxed{\sf \dfrac{1}{3} = x}}$

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Answer 2 :-

$\longmapsto\sf30 = \dfrac{6}{x}$

Transposing x from RHS to LHS, changing it's sign,

$\longmapsto \sf30 \times x = 6$

Multiplying x with 30,

$\longmapsto\sf30x = 6$

Transposing 30 from LHS to RHS, changing it's sign,

$\longmapsto\sf x = \dfrac{6}{30}$

Reducing 6/30 to it's simplest form,

$\longmapsto \underline{\boxed{\sf x = \dfrac{1}{5}}}$

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Answer 3 :-

$\longmapsto\sf \dfrac{5}{x} = 3$

Transposing x from LHS to RHS, changing it's sign,

$\longmapsto \sf5 = 3 \times x$

Multiplying 3 with x,

$\longmapsto \sf5 = 3x$

Transposing 3 from RHS to LHS, changing it's sign,

$\longmapsto \underline{\boxed{\sf\dfrac{5}{3} = x}}$

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