Transposition
Transposition is a method to isolate the variable to one side of the equation and everything else to the other side so that you can solve the equation.
Algebraic equations can be solved using the Law of equations. The Law of equations states that whatever you do on one side of an equation, you must do on the other side as well.
Answer:

She'll need to save at least 10 months to be able to go buy the computer.
Step-by-step explanation:
Let
x ----> the number of months
we know that
The inequality that represent this situation is equal to

solve for x


therefore
The minimum number of months is 10
Well the answer is 300 hundred students because there is 36 that makes 12% then to find 100% you need to do 12/36= 100/x doing this given x = to 300 total
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