Final answer:
To isolate x, add 3y to both sides of the equation x - 3y = -8. The value of x is 1.
Step-by-step explanation:
To isolate x, we can add 3y to both sides of the equation x - 3y = -8. This gives us x = 3y - 8. Now, substituting 3 for y in the equation, we get x = 3(3) - 8 = 1.
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