Question 746182: q - 4 = 5
Answer by tommyt3rd(5050)   (Show Source):
You can put this solution on YOUR website! An equation is a statement that two quantities have the same value. Solving an equation is the process of determining when the equation is true. Clearly we can see that this equation is true when q=9, but in math we "solve" it by following specific rules. In this case we use the property of equality that tells us that whatever we add/subtract to/from one side of the equation is the same as what we do to the other side.
step-by-step:
q-4=5
q-4+4=5+4 <--q would be isolated if we move the 4, it is subtracted so we add a 4
q+0=9 <--- any number added with its opposite results in 0 and 0 added to q is still q
q=9
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