-9又5/7 +(-99又5/7 )+(-999又5/7)+( -9999又5/7)等于多少

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-9又5/7 +(-99又5/7 )+(-999又5/7)+( -9999又5/7)等于多少
-9又5/7 +(-99又5/7 )+(-999又5/7)+( -9999又5/7)等于多少

-9又5/7 +(-99又5/7 )+(-999又5/7)+( -9999又5/7)等于多少
-9又5/7 +(-99又5/7 )+(-999又5/7)+( -9999又5/7)
=-10-100-1000-10000+2/7×4
=-11110+8/7
=-11108又6/7

-9又5/7 +(-99又5/7 )+(-999又5/7)+( -9999又5/7)
= -10-100-1000-10000+2/7×4
= -11110+8/7
= -111108又6/7