Подробно все расписала, лови :)
d)
15/18 - 1/4 = 30/36 - 9/36 = 21/36 = 7/12
е)
23/140 + 5/63 = 1449/8820 + 700/8820 = 2149/8820 = 307/1260
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Подробно все расписала, лови :)
d)
15/18 - 1/4 = 30/36 - 9/36 = 21/36 = 7/12
е)
23/140 + 5/63 = 1449/8820 + 700/8820 = 2149/8820 = 307/1260