Question

решите систему уравнений {x+3=2+y; 3x=4+y

Answer 1

x = y - 1
3x = 4 + y

x = y-1
3*(y-1) = 4+y

x = y-1
2y = 7

x = y-1
y = 3.5

x = 2.5
y = 3.5

Answer 2

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