1.

3. If 2x+y=5 and y-1=0 then the value of x is (a) 4(b) 2 (c) 5 (d) 0​

Answer»

AnswEr :

  • The value of x = 2.

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Explanation :

We are given with the two equation, that is,

  • 2x + y + 5.

  • y - 1 = 0.

We have to FIND out the value of x.

Now,

As we are given with two equation, first we will find the value of y, after that we will find the value of x.

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→ y - 1 = 0

→ y = 1

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Substituting the value of y in equation (1) :

→ 2x + y = 5

→ 2x + 1 = 5

→ 2x = 5 - 1

→ 2x = 4

→ x = 4/2

→ x = 2

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Hence, the value of x is 2.

So, OPTION (b) 2 is correct.

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⠀⠀⠀⠀⠀⠀Verification :

==> 2x + y = 5

==> 2 × 2 + 1 = 5

==> 4 + 1 = 5

==> 5 = 5

Clearly, LHS = RHS.

Here both the conditions SATISFY, so our answer is correct.

Hence Verified !


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