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Q.

Which one of the following is not an equation?


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a

f=y-34

b

17q=2p-8

c

3-7u=8t

d

-2y+3x 

answer is D.

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Detailed Solution

Given,
f=y-34 … (1)
17q=2p-8 … (2)
3-7u=8t … (3)
-2y+3x … (4)
We know that an equation is a mathematical statement that two things are equal. It consists of two expressions, one on each side of the sign of equality.
Thus, the sign ‘=’ should be present to show the equality between the two expressions.
In (1), (2) and (3), the two expressions are separated by ‘=’, so these are equations.
But in (4), there is only one expression with no ‘=’ in between.
Therefore, (4) is not an equation.
Hence, the correct option is 4.
 
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