DEPRECATED Solving matrix equations

Problem

Find the solution to the following equation:
[6236][st]=[2015]\qquad \left[ \begin{array}{cc} 6 & 2 \\ 3 & 6 \end{array} \right] \left[ \begin{array}{c} s \\ t \end{array} \right] = \left[ \begin{array}{c} 20 \\ 15 \end{array} \right]
s, equals, space
  • Your answer should be
  • an integer, like 6
  • an exact decimal, like 0, point, 75
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
t, equals, space
  • Your answer should be
  • an integer, like 6
  • an exact decimal, like 0, point, 75
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
Do 4 problems