gungamer720
25.09.2019 •
Mathematics
In some countries congress, the number of representatives is 80 less than 5 times the number of senators. there are a total of 520 members. find the number of senators and the number representatives
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Ответ:
r = 5s - 80
s + (5s - 80) = 520
6s - 80 = 520
6s = 520 + 80
6s = 600
s = 600/6
s = 100 <=== senators
r = 5s - 80
r = 5(100) - 80
r = 500 - 80
5 = 420 <=== representatives
Ответ:
-4y - 19 = -19
-4y = -19 + 19
-4y = 0
y = 0/-4
y = 0