Question 938487
7(5r+2t = 5)
<u>2(3r-7t) = 3)</u>  
...
35r + 14t = 35
<u>6r - 14t = 6</u>  
41r = 41
41r = 41
r = 1 and t = 0 {{{5 + 2t = 5}}}