Can someone please explain how to do this!! I’ve been stuck for awhile A system of equation is shown below equation A: 5x+9y=12 Equation B: 4x-3y=8 Which method eliminates one of the variables A. Multiply equation b by 3 and add to equation a B. Multiply equation b by 5/4 and add the results by equation a C. Multiply equation a by -1/3 and add the results to equation b D. Multiply equation a by 4/5 and add the results to equation b