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kenz391
25.12.2019 •
Mathematics
What is the solution to 3x-y=4 and 2y+x=11
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Ответ:
1x + 3y = 11 ⇒ 1x + 3y = 11
10x = 23
10 10
x = 2.3
3x - y = 4
3(2.3) - y = 4
6.9 - y = 4
- 6.9 - 6.9
-y = -2.9
-1 -1
y = 2.9
(x, y) = (2.3, 6.9)
Ответ:
Step-by-step explanation: