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31.05.2021 •
Mathematics
X+y=5 2x-y=4 solve garpa
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Ответ:
x = 3, y = 2
Step-by-step explanation:
x + y = 5
x = 5 - y
2x - y = 4
2(5 - y) - y = 4
10 - 2y - y = 4
10 - 3y = 4
3y = 10 - 4
3y = 6
==> y = 2
x = 5 - y
x = 5 - 2
==> x = 3
Ответ:
x=3. y=2
Explanation
x+y=5 2x-y=4
x=5-y
2(5-y) - y =4
10-2y-y=4
-2y - y = 4 - 10
-3y = -6
y = 2
x = 5-y
x=5-2
x=3
Ответ:
y=16
Step-by-step explanation: