if 2x-3y+1/2 = x+4y+8/3 =4x-7y+2/5 then what is (x+y)equal to?
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( 2x-3y+1) /2= (x+9y+8) /3= (4x+7y+12) /5 = k
( 2x-3y+1) = 2k
(x+9y+8) = 3 k
So 3x +6y + 9 = 5k
4x + 7y + 12 = 3x +6y + 9 = 5k
x +y +3 = 0
x+y=-3
Step-by-step explanation:
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