The correct option is B 1/5 The given equation is 2/5 + x = 3/5 Subtracting 2/5 on both sides, we get 2/5 + x nbsp; 2/5 = 3/5 – 2/5 nbsp; ⇒ x = 1/5 ...

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Standard VII

Mathematics

Solution of an Equation

Find x, if 2/...

Question

Find $x$ , if $\frac{2}{5} + x = \frac{3}{5}$

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$\frac{1}{5}$

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$\frac{- 1}{5}$

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-1

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Solution

The correct option is B
$\frac{1}{5}$

The given equation is $\frac{2}{5} + x = \frac{3}{5}$

Subtracting $\frac{2}{5}$ on both sides, we get

$\frac{2}{5} + x - \frac{2}{5} = \frac{3}{5} - \frac{2}{5}$

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

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Find x, if 25+x=35

The correct option is B 15 The given equation is 25+x=35 Subtracting 25 on both sides, we get 25+x−25=35–25 ⇒x=15

Find $x$ , if $\frac{2}{5} + x = \frac{3}{5}$

The correct option is B
$\frac{1}{5}$

The given equation is $\frac{2}{5} + x = \frac{3}{5}$

Subtracting $\frac{2}{5}$ on both sides, we get

$\frac{2}{5} + x - \frac{2}{5} = \frac{3}{5} - \frac{2}{5}$

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