Answer:
Explanation:
5x+4y=-30 ....(1)
3x – 9y=-18....(2)
divid (2) by : 3
x -3y = -6 so x = 3y - 6....(*)
put this value for x in (1) : 5(3y - 6 ) +4y = - 30
15y - 30 +4y = - 30
19y = 0 so : y = 0 put this value in (*) : x = 3(0) - 6 .... x = - 6
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