如题所述
5x(3/7-2/5)x7简便运算?
解析:
5×(3/7-2/5)×7
=5×3/7×7-5×2/5×7
=15-14
=1
解析:
5×(3/7-2/5)×7
=5×3/7×7-5×2/5×7
=15-14
=1
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第1个回答 2020-07-31
5x(3/7-2/5)x7
=35×(3/7-2/5)
=15-14
=1本回答被网友采纳
=35×(3/7-2/5)
=15-14
=1本回答被网友采纳
第2个回答 2022-06-24
简便计算过程如下:
一、提取原式:5X333+111X18二、计算过程: =5X3x111+111X18 =111x(15+18) =111x33 =111x30+111x3 =3330+333 =3663三、计算结果:3663
一、提取原式:5X333+111X18二、计算过程: =5X3x111+111X18 =111x(15+18) =111x33 =111x30+111x3 =3330+333 =3663三、计算结果:3663
第3个回答 2020-07-31
5*(3/7-2/5)*7
=35*3/7-35*2/5
=5*3-7*2
=15-14
=1
=35*3/7-35*2/5
=5*3-7*2
=15-14
=1
第4个回答 2020-07-31
5×(3/7-2/5)×7
=5×3/7×7-5×2/5×7
=15-14
=1
=5×3/7×7-5×2/5×7
=15-14
=1