solve this system by using the elimination method

Question

7x - 5y = -24

-9x + 5y = 18

Answer 1

just add them to eliminate y

leaving -2x = -6

x = 3

then substitute that back into either equation and solve for y

-9(3) +5y = 18

5y = 18+27 = 45

y=45/5 = 9