(21.5-21)*25*0.5+25*0.4 等于多少
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(21.5-21)*25*0.5+25*0.4 等于多少
![(21.5-21)*25*0.5+25*0.4 等于多少](/uploads/image/z/997598-38-8.jpg?t=%2821.5-21%29%2A25%2A0.5%2B25%2A0.4+%E7%AD%89%E4%BA%8E%E5%A4%9A%E5%B0%91)
(21.5-21)*25*0.5+25*0.4 等于多少
= 0.5 x 25 x 0.5 + 25 x0.4
= 25 x 0.25 +25 x 0.4
= 25 x (0.25+0.4)
= 25 x 0.65
= 65 x 0.25
= 65 ÷4
= 16.25
= 0.5 x 25 x 0.5 + 25 x0.4
= 25 x 0.25 +25 x 0.4
= 25 x (0.25+0.4)
= 25 x 0.65
= 65 x 0.25
= 65 ÷4
= 16.25