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【(-9.7)+4+(-5.3)+8递等式计算+步骤~(-9.7)+4+(-5.3)+8计算-7-(+7)-(-14)-2】
题目内容:
(-9.7)+4+(-5.3)+8递等式计算+步骤~
(-9.7)+4+(-5.3)+8计算
-7-(+7)-(-14)-2优质解答
(-9.7)+4+(-5.3)+8
=4+8-(9.7+5.3)
=12-15
=-3
-7-(+7)-(-14)-2
=-7-7+14-2
=-2 - 追问:
- 8x(-1又5/7)x(-25)除以(-4/7)
49又24/25x(-5)
(-47.65)x2又6/11+(-37.15)x(-2又6/11)+10.5x(-7又5/11)
- 追答:
- 8x(-1又5/7)x(-25)÷(-4/7)
=8×(-12/7)×(-25)×(-7/4)
=-600
49又24/25x(-5)
=(50-1/25)×(-5)
=-250+1/5
=-249.8
(-47.65)x2又6/11+(-37.15)x(-2又6/11)+10.5x(-7又5/11)
=(-47.65)×(28/11)+(-37.15)×(-28/11)+105×(-82/11)
=(28/11)×(-47.65+37.15)+10.5×(-82/11)
=(28/11)×(-10.5)+10.5×(-82/11)
=10.5×(-28/11-82/11)
=10.5×(-110/11)
=-105
(-9.7)+4+(-5.3)+8计算
-7-(+7)-(-14)-2
优质解答
=4+8-(9.7+5.3)
=12-15
=-3
-7-(+7)-(-14)-2
=-7-7+14-2
=-2
- 追问:
- 8x(-1又5/7)x(-25)除以(-4/7)
49又24/25x(-5)
(-47.65)x2又6/11+(-37.15)x(-2又6/11)+10.5x(-7又5/11)
- 追答:
- 8x(-1又5/7)x(-25)÷(-4/7)
=8×(-12/7)×(-25)×(-7/4)
=-600
49又24/25x(-5)
=(50-1/25)×(-5)
=-250+1/5
=-249.8
(-47.65)x2又6/11+(-37.15)x(-2又6/11)+10.5x(-7又5/11)
=(-47.65)×(28/11)+(-37.15)×(-28/11)+105×(-82/11)
=(28/11)×(-47.65+37.15)+10.5×(-82/11)
=(28/11)×(-10.5)+10.5×(-82/11)
=10.5×(-28/11-82/11)
=10.5×(-110/11)
=-105
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