3x+5x, 8x, 7y−2y+4-9, 5y-5, 4a+3a−2+8, 7a+6, 9m−4m+6m-3(4-7), 11m+9, 2n+8−5n+3-(-4), −3n+20, 10p−3+4p+7-7, 14p-3, 6x+2y+4x−y-(-10), 10x+y+10, 12a−5b+3a+2b+2(-8), 15a−3b-16, 8m+4n−3m+6n−2+15, 5m+10n+13, 15x−7+2x+5−4x-40/5, 13x−10

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