Answer:
x=2 y=1 x+y= 2+1=3 3 is the value of x+y
Explanation:
X=2, Y=1
X+Y=3
-6x+12=0. first subtract 12 from each side
-6x=-12 now divide both sides by -6
X=2
4y+5=9. subtract 5 from each side
4y=4 divide both sides by 4
Y=1
2+1=3
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