4x-5y+9+3x+8y-7
First, combine the coefficients of x and y: 4x + 3x = (4 + 3)x = 7x -5y + 8y = (-5 + 8)y = 3y Next, combine the constant terms: 9 - 7 = 2 Putting it all together, the simplified expression is: 7x + 3y + 2
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