Can some one show how to solve this? The answer is 10

-x-1=x-21 Add 1 to each side -x-1+1=x-21+1 -x=x-20 Minus x from each side -x-x=x-x-20 -2x=-20 Divide -20 by -2x If two negatives are divided, it becomes a positive number -20÷-2x=10 x=10

Answered by Geekhawk | 2024-06-10

To solve − x − 1 = x − 21 , we first add 1 to both sides, then eliminate x terms until we find x = 10 . Substituting this value back into the original equation verifies that it is correct. Thus, the solution to the equation is 10.
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Answered by Geekhawk | 2024-12-26