x − 5 = 4 x = 4 + 5 x = 9
x-5=4 x=9
Therefore it is 9
To find the value of x in the equation x − 5 = 4 , we square both sides to get x − 5 = 16 . Adding 5 gives us x = 21 , which we can verify by substituting back into the original equation.
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