9x + 5y = 28 5x + 9y = 56 The solution set for the system of equations is. NextReset

5 (9x+5y=28) - 9 (5x+9y=56) = 0

(45x+25y=140) - (45x+81y=504) = 0

45x+25y-45x-81y=-364

-56y=-364

y=6.5, now use either original equation to solve for x ...

9x+5 (6.5) = 28

9x+32.5=28

9x=-4.5

x=-0.5

So the single solution (x, y) is (-0.5, 6.5)

The solution set would be (-0.5,6.5). Make sure to put the negative first since it is the smaller number.