4x+3y =39 , 3x+4y =10 what is the value of x + y
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Answer:
12x+9y=117
-12x-16y= -40
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-7y=77
y= -11
4
3x= 10-4(-11)
3x=10+44=54
x=18
x+y=54+(-11)=54-11=43
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