<PRE><B>Question 288417</B>
3r - 4s = 14
4r + 3s = 27
:
Multiply the 1st equation by 3, and the 2nd equation by 4, then add
9r - 12s = 42
16r +12s = 108
------------------adding eliminates s, find r
25r = 150
r = {{{150/25}}}
r = 6
:
Find s using the 2nd equation
4(6) + 3s = 27
24 + 3s = 27
3s = 27 - 24
3s = 3
s = 1
:
:
Check solutions in the 1st equation
3(6) - 4(1) = 14</PRE>