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[ 1/1 Equation]
Work: Find the solution of equation ((0.21/0.9)*q)/((1.11/0.9)*q*q) = 0 .
Question type: Equation
Solution:Original question:| | ( | ( | 21 100 | ÷ | 9 10 | ) | q | ) | ÷ | ( | ( | 111 100 | ÷ | 9 10 | ) | q | q | ) | = | 0 |
| Multiply both sides of the equation by: | ( | ( | 111 100 | ÷ | 9 10 | ) | q | q | ) |
Remove a bracket on the left of the equation::
Remove a bracket on the left of the equation:
The equation is reduced to :
The coefficient of the unknown number is reduced to 1 :
We obtained :
However,when simplifying the equation, multiply both sides by ( | ( | 111 100 | ÷ | 9 10 | ) | q | q | ) | , 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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