yoyo6710
07.05.2021 •
Mathematics
In a fraternity with 31 members, 18 take mathematics, 5 take both mathematics and chemistry , and 8 take neither mathematics nor chemistry . How many take chemistry but not mathematics?
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Ответ:
answer:
14
step-by-step explanation:
43=x+x+15
that means 2x=28
x=14