Normally, this kind of thing is done with a pen or a pencil or a crayon, not with a graphing calculator. Numbers like to multiply, divide and subtract. They don't want to be words or pictures. That's ...
For example, the simultaneous equations \(3a + 2b = 17\) and \(4a - b = 30\) have no common coefficient as the coefficients of \(a\) are 3 and 4, and the coefficients of \(b\) are 2 and -1. Remember ...
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