eloyjrcruz101
05.04.2020 •
Mathematics
3x - 2y = 17
2x + y = 30
*solve for both variables,
Solved
Show answers
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Ответ:
multiplying equation 2 by 2 and adding eq 1
3x-2y = 17
+4x+2y = 60 3
=
7x = 77
x = 77/7 = 11
then
y = (60-4x)/2 {from equation 3}
y = 60-44/2 = 16/2 = 8
then
x = 11
y = 8
hope it helps
Ответ: