Have a look at the following video which shows how to solve a pair of simultaneous equations usingyour Casio calculator. NOTE: you should only use this technique to check your answer, if you don't show all your working in the exam you will lose marks.
Now see if you can solve the question we solved in Example 1:
| 2x | + | y | = | 4 |
| x | − | y | = | −1 |
Did you get x=1 and y=2?
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