1.-3-[-5+(1-0.2×3/5)÷(-2)]
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1.-3-[-5+(1-0.2×3/5)÷(-2)]
2.-9²+2×(-3)²+(-6)÷(-2/3)
3.-1四次方-(1-0.5)×1/3×[2-(-3)²]
4.(-3)²-(1又1/2)×2/9-6÷|-2/3|
5.32×(-2/3)+(-11)×(-2/3)-21×(-2/3)
6.-3/4×[-3²×(-2/3)²-2]
7.-2²+(-2)³×5-(-0.28)÷(-2)²
8.-(-1)四次方-(1-1/2)÷(+3)×[2-(-3)²]
2.-9²+2×(-3)²+(-6)÷(-2/3)
3.-1四次方-(1-0.5)×1/3×[2-(-3)²]
4.(-3)²-(1又1/2)×2/9-6÷|-2/3|
5.32×(-2/3)+(-11)×(-2/3)-21×(-2/3)
6.-3/4×[-3²×(-2/3)²-2]
7.-2²+(-2)³×5-(-0.28)÷(-2)²
8.-(-1)四次方-(1-1/2)÷(+3)×[2-(-3)²]
题目不吵了哈!
1.=-3-[-5+(1-0.12)÷(-2)]=-3-[-5+0.78÷(-2)]=-3-[-5-0.39]=2+0.39=2.39;
2.=-81+2×9+6÷2/3=-81+18+9=-54;
3.=1-1/2×1/3×(-7)=1+7/6=13/6;
4.=9-3/2×2/9+6×3/2=9-1/3+9=17又2/3;
5.=-64/3+22/3+42/3=0/3=0;
6.=-3/4×[-9×4/9-2]=-3/4×(-6)=9/2;
7.=-4+(-40)+0.28÷4=-44+0.07=-43.93;
8.=-1-1/2÷3×[2-9]=-1-1/6×(-7)=-1+7/6=1/6.
1.=-3-[-5+(1-0.12)÷(-2)]=-3-[-5+0.78÷(-2)]=-3-[-5-0.39]=2+0.39=2.39;
2.=-81+2×9+6÷2/3=-81+18+9=-54;
3.=1-1/2×1/3×(-7)=1+7/6=13/6;
4.=9-3/2×2/9+6×3/2=9-1/3+9=17又2/3;
5.=-64/3+22/3+42/3=0/3=0;
6.=-3/4×[-9×4/9-2]=-3/4×(-6)=9/2;
7.=-4+(-40)+0.28÷4=-44+0.07=-43.93;
8.=-1-1/2÷3×[2-9]=-1-1/6×(-7)=-1+7/6=1/6.
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