You must isolate the variable, for example:
If 3x + 5 = 14
you first subtract five from each side
3x + 5 = 14
- 5 - 5
which results in
3x = 9
you then divide both sides by 3
3x = 9
--- ---
3 3
so you are left with:
x = 3
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You don't use unknown variables to solve an equation. The purpose of solving an equation is to find the value of the variable so that it's no longer unknown.
you have to solve the actual equation in order to answer this about your variable
you can only solve for one in an equation so it can equal something
When an equation has a variable in it (only one), then there are only certainvalues the variable can have that will make the equation a true statement."Solving" the equation means finding those values for the variable.
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