A = 2x +5(8-x)
A = 2x +40-5x
A = -3x + 40
B = 2x+5+(8-x)
B = 2x+5+8-x
B = x + 13
C = (2x +5)×8-x
C = 16x+40-x
C = 15x + 40
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A = 2x +5(8-x)
A = 2x +40-5x
A = -3x + 40
B = 2x+5+(8-x)
B = 2x+5+8-x
B = x + 13
C = (2x +5)×8-x
C = 16x+40-x
C = 15x + 40