The larger of two numbers is 3 more than twice the smaller. if the twice the larger is decreased by 5 times the smaller the result is 0. find the two numbers

Let x be the large number, and y be the smaller one: x=3+2y, 2x-5y=0 (from the question) - - > substitute the first equation in the second - - > 2 (3+2y) - 5y=0 - - > 6+4y-5y=0 - - >6-y=0 - - > y=6, substitute y=6 in the first equation - - > x=3+2 (6) - - > x=15. therefore the two numbers are 6,15