Решить ) а) 8 3/17 * 5 1/4 + 3 14/17 * 5 1/4= б) 3 4/13 * 15 3/41 - 3 4/13 * 2 3/41=
294
407
Ответы на вопрос:
А)8 3/17×5 1/4+3 14/17×5 1/4= =139/17×21/4+65/17×21/4= =21/4(139/17+65/17)= 21/4×204/17=21/1×51/17=21/1×3/1=63 б)3 4/13×15 3/41-3 4/13×2 3/41= =43/13×618/41-43/13×85/41= =43/13×(618/41-85/41)= =43/13×533/41=43
1)4760: 8=595-пальто 2)595*4=2380-костюмов 3)4760-(595+2380)=4760-2975=1785-платьев
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