4 Solve your given set of simultaneous equations (with three variables) using matrix and determinant methods.
A 2a-2b+2c=2 ...
factorize -25x - 15
6k = 5k/8t + 7t
3-x/2=-1
2 pluse 22
find the sum of the interior angles in 13 sided polygon
9k-15=36-6K
8t = 11k/13
125 equivalent to mod12
