Number to be added on LHS of equation $y - 4 = 2$ to find the value of $^{'} y^{'}$ is ________.
(Use elimination method)

4

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- 6

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0

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6

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Solution

The correct option is A $4$
$y - 4 = 2$

Let's add $4$ on both sides to find the value of $y$ .

$y - 4 + 4 = 2 + 4$ (elimination)

$y = 6$ , here we got the value of $y$ .

$∴$ Number to be added on LHS of the equation to find the value of $^{'} y^{'}$ is $4$ .

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For solving each pair of equations, use the method of eliminations by equating coefficients:

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