maths
posted by cecelia .
solve the following simultaneous equations using matrices 3x6y=24 and 4x+5y=23

Assuming you know how to calculate a determinant, the answer is
x = 24 6 / 3 6 = 18/9 = 2
....23 5/ 4 5
You can get y by substitution of x=2 in either equation, or from a separate ratio of determinants.
If you are not familiar with the notation, nor why I chose those numbers, nor how to calculate the determinants, then you need to review the subject. Your textbook should contain that information. 
Those are supposed to be square 2 x 2 matrices in numerator and denominator of my previous answer. It is hard to get the type spacing right to align the top and bottom halves. The   symbols denote the determinant of the matrix.
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