Correct: 70+39-64= 45, 60-10+20= 70, 64+38-25= 77, 90-36+28= 82, 65+64-90= 39, 59+60-32=87, Incorrect: 85-32+21=64, 49-35+15=30, 64+59-80=48, 91-63+26=58, 65+32-75=11,

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