1.(4-5/2×3/5)×1/3×1/3-1/3=(4-1/2×3)×1/3×1/3-1/3=(4-3/2)×1/3×1/3-1/3=5/2×1/3×1/3-1/3=5/18-1/3=-1/18
а)(2b-b)+(12-3)=b+9
б)(2×4)×(a×b)=8ab
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1.(4-5/2×3/5)×1/3×1/3-1/3=(4-1/2×3)×1/3×1/3-1/3=(4-3/2)×1/3×1/3-1/3=5/2×1/3×1/3-1/3=5/18-1/3=-1/18
а)(2b-b)+(12-3)=b+9
б)(2×4)×(a×b)=8ab