Find the value of x in given expression:

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answer is D.

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Detailed Solution

Concept- The two equations will then be subtracted. The value of y will be determined by this approach. Now, change the value of y into one of the two equations given to obtain the value of x. Elimination is a strategy used to solve linear equations, and it is known as such.
We have been given the following equations:
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.
It is clear that these are linear equations with two variables. So let's use the elimination method to solve these equations. To discover the other, we will first eliminate one of the variables.
Now, when we multiply equation (i) by b, we get

And when we multiply equation (ii) by a, we get

Now we will subtract equation (iii) from equation (iv), we get
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By putting the value of y in equation(i), we get
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Hence, the correct answer is option 4).

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