Hiya, really stumped on this one, have got to do this without a calculator. i understand how to do simultaneous equations, i think, but can't get the solution on this question, using these numbers. couldn't see how the numbers could be nicely divided/multiplied to get numbers that i can work with. please help
what's the best/easiest way to solve it?
23x + 47y + 105 = 0
7x - 5y + 3 = 0