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[%2³÷(%2)³%3/5x(%5/9)²]...

2(x)x-(3x)+(5x)+x的七次方 =2x^9-27x^9+25x+x^7 =25x^9+x^7+25x.

2(-x)乘*-(-3x)+(-5x)乘x的5次方=2x的6次方乘x+27x的9次方++25x的4次方乘x的5次方=2x的9次方+27x的9次方+25x的9次方=54x的9次方

2/3÷2/3-3-3=8÷2-9-(-9)=4-9+9=4;

(3x+5x-2)÷(x+3)=(3x+9x-4x-2)÷(x+3)=3x-(4x+2)÷(x+3)=3x-(4x+12x-12x-36+39)÷(x+3)=3x-4x-12+9÷(x+3)商式为3x-4x-12余式为39

[(2/5)x-7x+(2/3)x]÷(2/3)x=(3/5)x-(21/2)x+1

=-27/8*9/25-43/19*19/43*(-27/8)+16/25*27/8=-27/8*9/25+27/8+16/25*27/8=27/8(16/25-9/25+1)=27/8*32/25=108/25=-2*9-(-1)÷0.5=-18+2=-16回答满意望采纳,谢谢.

(1)2-3-(2)*(7) =8-9-14=-1-14=-15(2)-1-6分之1[2-(3)]=-1-1/6*(2+27)=-1-29/6=-35/6 (-6分之35)(3)-4分之1*(2)-[11÷(2又2分之1)]÷5分之4=1/4x8-[1-2/5]x5/4=2-3/5x5/4=2-3/4=5/4 (4分之5)

(-1)÷2/9=-9/22*-0.5打错的2*-0.5=-1/23*3/2=27/4[(-1)÷2/9+2*-0.5-3*3/2]=-9/2-1/2-27/4=-47/4Ⅰ-4÷2*-1/2Ⅰ=1/2[(-1)÷2/9+2*-0.5-3*3/2]÷Ⅰ-4÷2*-1/2Ⅰ=-47/4÷1/2=-47/2

1:三次三项

-2÷(-4)+1÷(-2分之1)=-8÷-64-8=1/8-8=-63/812-(9分之7-6分之5)乘以4=12-28/36-30/36*16=12+2/36*16=12+8/9=116/9(-3)*(-2)-{(-2)*(-1)}=-18-4=-22

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