You know what X is, so...,

3Y = 3(5 - Y) + 1

3Y = 15 - 3Y + 1

6Y = 16

**Y = 16/6**

======find X.

X = 5 - 16/6

X = 30/6 - 16/6

**X = 14/6**

======

**(14/6, 16/6)**

======Solution set. You check it.

You know what X is, so...,

3Y = 3(5 - Y) + 1

3Y = 15 - 3Y + 1

6Y = 16

**Y = 16/6**

======find X.

X = 5 - 16/6

X = 30/6 - 16/6

**X = 14/6**

======

**(14/6, 16/6)**

======Solution set. You check it.

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