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Formation of Algebraic Expressions

If we subtrac...

Question

If we subtract $22$ from three times a number, we get $68$ . Find the number.

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Solution

Let number $= x$
$\Rightarrow 3 x - 22 = 68$
$3 x = 68 + 22$
$3 x = 90$
$x = \frac{90}{3}$
$= 30$ .

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