(57+38/39)÷19能简算的要简算
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(57+38/39)÷19能简算的要简算
(57+38/39)÷19能简算的要简算
(57+38/39)÷19能简算的要简算
(57+38/39)÷19
=(57+38/39)x1/19
=57x1/19+38/39x1/19
=3+2/39
=3又2/39
=57/19+(38/39)/19
=3+2/39
=80/39 行不
(57+38/39)÷19能简算的要简算
(57+38/39)÷19能简算的要简算
(57+38/39)÷19能简算的要简算
(57+38/39)÷19
=(57+38/39)x1/19
=57x1/19+38/39x1/19
=3+2/39
=3又2/39
=57/19+(38/39)/19
=3+2/39
=80/39 行不