计算:-7.5×(-11又1/9)-16又2/3
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计算:-7.5×(-11又1/9)-16又2/3
计算:-7.5×(-11又1/9)-16又2/3
计算:-7.5×(-11又1/9)-16又2/3
-7.5×(-11又1/9)-16又2/3
=-15/2×(-100/9)-50/3
=750/9-150/9
=600/9
=200/3
200/3
=15/2*(100/9)-(16+2/3)
=250/3-2/3-16
=248/3-16
=82+2/3-16
=66又2/3
-7.5×(-11又1/9)-16又2/3
=-(15/2)×(-100/9) -50/3 (交叉抵消)
=250/3-50/3
=200/3