(-24)÷(-3/8)÷(-2/7)÷(-4/35)= (-2)÷(-3/5)*4/5÷(-3又1/5)=
(-2又2/3)÷(-1又7/9)=(-1.4+14/15)÷(-7/30)=-3的2次方÷(-2又1/4)*(3/2)的3次方=(+3又1/2)+(-7.89)+(-2...
(-2又2/3)÷(-1又7/9)=
(-1.4+14/15)÷(-7/30)= -3的2次方÷(-2又1/4)*(3/2)的3次方=
(+3又1/2)+(-7.89)+(-2又1/2)+(-0.64)+(+7.89)+0.64= 要过程拜托拜托拜托拜托 展开
(-1.4+14/15)÷(-7/30)= -3的2次方÷(-2又1/4)*(3/2)的3次方=
(+3又1/2)+(-7.89)+(-2又1/2)+(-0.64)+(+7.89)+0.64= 要过程拜托拜托拜托拜托 展开
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(-24)÷(-3/8)÷(-2/7)÷(-4/35)
=24×8/3÷(2/7)÷(4/35)
=64×7/2÷4/35
=224×35/4
=1960
(-2)÷(-3/5)*4/5÷(-3又1/5)
= -2*5/3*4/5÷(16/5)
= -8/3 *5/16
=-5/6
(-2又2/3)÷(-1又7/9)
=8/3* 9/16
=3/2
(-1.4+14/15)÷(-7/30)
=(-2/5-1/15)÷(-7/30)
=7/15 * 30/7
=2
-3的2次方÷(-2又1/4)*(3/2)的3次方
=-9*(-4/9)*27/8
=27/2
(+3又1/2)+(-7.89)+(-2又1/2)+(-0.64)+(+7.89)+0.64
=(+3又1/2)+(-2又1/2)+(-0.64)+0.64+(+7.89)+(-7.89)
=3又1/2-2又1/2-0.64+0.64+7.89-7.89
=1
=24×8/3÷(2/7)÷(4/35)
=64×7/2÷4/35
=224×35/4
=1960
(-2)÷(-3/5)*4/5÷(-3又1/5)
= -2*5/3*4/5÷(16/5)
= -8/3 *5/16
=-5/6
(-2又2/3)÷(-1又7/9)
=8/3* 9/16
=3/2
(-1.4+14/15)÷(-7/30)
=(-2/5-1/15)÷(-7/30)
=7/15 * 30/7
=2
-3的2次方÷(-2又1/4)*(3/2)的3次方
=-9*(-4/9)*27/8
=27/2
(+3又1/2)+(-7.89)+(-2又1/2)+(-0.64)+(+7.89)+0.64
=(+3又1/2)+(-2又1/2)+(-0.64)+0.64+(+7.89)+(-7.89)
=3又1/2-2又1/2-0.64+0.64+7.89-7.89
=1
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