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☆1 equations
[ 1/1 Equation]
Work: Find the solution of equation x/x+1 = 0 .
Question type: Equation
Solution:Original question: Multiply both sides of the equation by: | x |
Combine the items on the left of the equation:
The coefficient of the unknown number is reduced to 1 :
We obtained :
However,when simplifying the equation, multiply both sides by x | , and when
, its value is 0. Therefore, the value of this unknown number is not the solution of the equation, and the input to the equation is incorrect.
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