-1/6+1/2= 3-|-5|= 2x(-3) -3/4x(-2/3) -8/5除以(-0.4)= -(-5)²= -3/5²=

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-1/6+1/2= 3-|-5|= 2x(-3) -3/4x(-2/3) -8/5除以(-0.4)= -(-5)²= -3/5²=

-1/6+1/2= 3-|-5|= 2x(-3) -3/4x(-2/3) -8/5除以(-0.4)= -(-5)²= -3/5²=
-1/6+1/2= 3-|-5|= 2x(-3) -3/4x(-2/3) -8/5除以(-0.4)= -(-5)²= -3/5²=

-1/6+1/2= 3-|-5|= 2x(-3) -3/4x(-2/3) -8/5除以(-0.4)= -(-5)²= -3/5²=
-1/6+1/2=-1/6+3/6 =-1/3


3-|-5|=3-5=-2


 2x(-3) -3/4x(-2/3) -8/5除以(-0.4)
= -8+1/2+8/5×5/2

=-8+1/2+4
=-4+1/2
=-7/2


-(-5)²=-25


 -3/5²=-3/25   如果是整个分数的平方,则-(3/5)²=-9/25    (-3/5)²=9/25