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13 votes
13 votes
Which number completes this equation: 2/7=2/? A.2 B.5 C.7 D.9

User Smali
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1 Answer

19 votes
19 votes

The equation is given as: 2/7 = 2/ ?

Let the unknown number be represented by the symbol x

Thus, the equation is rewritten as:

2/7 = 2/x

Now, multiply both sides of the equation by x. This is as follows:

x * (2/7) = (2/x) * x

2x/7 = 2

Now, multiply both sides of the equation by 7. This is as follows:

7* (2x/7) = 2 * 7

2x = 14

Now, divide both sides of the equation by 2

2x/2 = 14/2

x = 7

Therefore, the number that completes the equation is 7 (Option C)

User Luis Averhoff
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