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21 votes
Find the value of x.
(2x + 30)
(5x - 18)

1 Answer

10 votes

Answer:

No answer as written. 16 if we add an equals sign.

Explanation:

As written, there is no "=" sign in either expression. That means they are only expressions, not equations. x can be anything. 10, 12345, 0.00000343345567788, etc. There is nothing that restricts the value of x.

If we set the two expressions equal to each other, we can calculate a value of x:

(2x + 30) = (5x - 18)

3x = 48

x = 16

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