What is the solution for x in the system of equations x - 1 = y and y + 3 = 6?

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Multiple Choice

What is the solution for x in the system of equations x - 1 = y and y + 3 = 6?

Explanation:
Solving by substitution. From the second equation, y equals 3. Plug that into the first equation, x minus 1 equals y, so x minus 1 equals 3. Adding 1 to both sides gives x equals 4. This value satisfies both equations (with x = 4, y = 3, and 3 plus 3 equals 6), so the solution for x is 4.

Solving by substitution. From the second equation, y equals 3. Plug that into the first equation, x minus 1 equals y, so x minus 1 equals 3. Adding 1 to both sides gives x equals 4. This value satisfies both equations (with x = 4, y = 3, and 3 plus 3 equals 6), so the solution for x is 4.

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