7+7+7 - 7×3, 4+4+4+4 - 4×4, 8+8+8 - 8×3, 10+10 - 10×2, 9+9 - 9×2, 5+5+5+5 - 5×4, 2+2+2+2+2 - 2×5, 6+6+6+6+6+6 - 6×6, 3+3+3 - 3×3, 1+1 - 1×2,

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