Question 221071
multiplying 1st eqn by 5 ___ 25r - 10s = 40


multiplying 2nd eqn by 2 ___ 4r + 10s = 76


adding new eqns (this eliminates the s terms) ___ 29r = 116 ___ r = 4


substituting ___ 2(4) + 5s = 38 ___ 5s = 30 ___ s = 6