Use the elimination to solve this equation.

2x+3y=55

9x+4y=105

X=5 y=15 (5,15).

This is how you do it:

-4 (2x+3y=55) : - 8x-12y=-220

3 (9x+4y=105) : 27x+12y=315

You add the two new equations together, canceling out the y values, and get the x value. Then, you go back and plug in the x value in the original equation to get the y value.