Answer: x = 81
Explanation:
You'd want to isolate x, meaning subtracting 100 on both sides to remove that from the equation. This results in 9x = 729, divide by 9 on both sides to remove that too from the equation and you'd be left with x = 81.
Answer:
81
9x + 100 = 829
9x =829-100
= 729
x = 729/9
x = 81
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