Writing an equation and drawing a graph are useful ways of finding the value of a variable. then the correct options are A and B.
What is an equation?
The equation in mathematics is the relationship between the variables and the number and establishes the relationship between the two or more variables.
Writing an equation and Drawing a graph are two ways or useful ways of finding the value of the variable. These two are the basic ways of solving the given variable equation. In mathematical ways, this is the most useful way.
Hence, options A and B are correct.
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