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nope58
06.09.2019 •
Mathematics
On the last three evenings, christine received a total of 77 phone calls at the call center. the second evening, she received 2 times as many calls as the third evening. the first evening, she received 5 more calls than the third evening. how many phone calls did she receive each evening?
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Ответ:
1st evening: 23
2nd evening: 36
3rd evening: 18
Step-by-step explanation:
Total: 77
2nd: 2 * 3rd evening
1st: 3rd evening + 5
Let x represent the 3rd evening.
77=(2*x)+(x+5)+x
x=18
Ответ:
Multiply both sides by the reciprocal (-8/7). You would get 40/7 or 5.71428571