kc22
18.02.2020 •
Mathematics
3х + Зу = 8
2х - у = 5
what is the solution
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Ответ:
x = 23/9
y = 1/9
Step-by-step explanation:
2x - y + y - 5 = 5 + y - 5
2x - 5 = y
3x + 3(2x - 5) = 8
3x + 6x - 15 = 8
9x/9 = 23/9
x = 23/9
2x - 5 = y
2(23/9) - 5 = y
46/9 - 5 = y
1/9 = y
Ответ:
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